The SYCBF04P11ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is an 11Pin standard lithium battery connector female socket (SMT with mounting posts) designed for scenarios requiring medium power density 5A-class power/medium-to-low-speed signal mixed transmission plus high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 11Pin medium-density design, with a PCB footprint width of only approximately 30mm, saving 40% space compared to traditional 5.0mm 11Pin solutions. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), and it can withstand a 260°C lead-free reflow peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level medium-to-low-speed signals. The rated current per pin is 5A, with a total current capacity of 55A, supporting flexible configurations of "4Pin power + 7Pin signal" or "6Pin power + 5Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides axial retention force ≥60N and radial retention force ≥40N on the PCB, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for smart home appliance control boards, light EV BMS, portable medical devices, industrial sensor modules, and other application scenarios with rigid requirements for "moderate power + miniaturization + 260°C process + high reliability + high cost-effectiveness," making it the preferred universal 5A-class 2.5mm pitch SMT lithium battery interconnect solution.

SYCBF04P10ASMT (PA9T gold-plated version) launched by SYC is a 10-Pin compact lithium battery connector female header (SMT with positioning posts) specifically designed for medium power density 5A-class power/mid-to-low-speed signal hybrid transmission + high-temperature SMT process scenarios. This product adopts a 2.5mm standard pitch + 10-Pin optimized pin count design, with a PCB footprint width of only approximately 27.5mm, saving 40% space compared to traditional 5.0mm 10-Pin solutions, and further reducing by 8% compared to the same series 11-Pin version, providing efficient interconnection possibilities for ultra-compact spaces in smart wearables, handheld tools, portable energy storage, and more; combined with PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current capacity is 50A, supporting flexible configurations of "4-Pin power + 6-Pin signal" or "5-Pin power + 5-Pin signal". The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suitable for application scenarios with rigid requirements for "extreme miniaturization + moderate power + 260°C process + high reliability" such as smart wearable device main control boards, handheld power tool battery packs, portable energy storage power supply BMS, and industrial IoT sensor modules, making it the preferred choice for compact 5A-class 2.5mm pitch SMT lithium battery interconnection solutions.

SYCBF04P9ASMT (PA9T Gold-Plated Version) launched by Sinyinda (SYC) is a 9-Pin lightweight lithium battery connector female header (SMT with positioning posts) specifically designed for scenarios requiring basic power density of 5A-level power/mid-to-low-speed signal hybrid transmission + high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 9-Pin optimized pin count design, with a PCB footprint width of only approximately 25mm, saving 40% space compared to traditional 5.0mm 9-Pin solutions, and further reducing by 9% compared to the same series 10-Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart bracelets, TWS earbuds, micro drones, and portable medical instruments. Combined with the high-performance PA9T base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperatures (10-30s) without deformation, blistering, or warping. Key upgrade: The contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current is 45A, supporting flexible configurations of "3-Pin power + 6-Pin signal" or "4-Pin power + 5-Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, TWS earbud charging case interfaces, micro drone battery holders, and portable medical testing device sensor ports, making it the preferred choice for lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solutions.

Sinyinda (SYC) SYCBF04P8ASMT (PA9T Gold-Plated Version) is not simply a "fewer-pin version" but an SMT female header with positioning posts specifically designed for the 8-Pin de facto standard interface in consumer electronics and light power systems. This product adopts a 2.5mm pitch 8-Pin layout with a PCB width of only approximately 22.5mm, making it the optimal physical layer solution for BMS communication protocols and power transmission in current TWS earbuds, smartwatches, handheld gimbals, portable energy storage, and other devices—avoiding the functional bottleneck of 6-Pin while eliminating routing redundancy of 9-11 Pin on compact PCBs. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per-pin current and 40A total current, it supports flexible configurations of "3P power + 5P signal" or "4P power + 4P signal." The key advantage is that the 8-Pin arrangement natively matches mainstream BMS/PMIC chips, enabling direct signal connection without flying wires, significantly reducing EMI risks and assembly complexity. The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the optimal design safety margin solution for engineers under the triangular constraints of "functional completeness, space utilization, and supply chain universality."

The SYCBF04P7ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is a 7Pin ultra-miniaturized lithium battery connector female socket (SMT with positioning posts) specifically designed for scenarios requiring 5A-level basic power density for power/medium-to-low-speed signal hybrid transmission combined with high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 7Pin optimized pin count design, with a PCB footprint width of only approximately 19mm, saving 40% space compared to traditional 5.0mm 7Pin solutions and further reducing by 15% compared to the same series 8Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart wearables, micro drones, and portable medical instruments. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring stable dual transmission of 5A high current and MHz-level medium-to-low-speed signals. Each pin is rated at 5A current carrying capacity, with a total current capacity of 35A, supporting flexible configurations of "3Pin power + 4Pin signal" or "4Pin power + 3Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating cycles and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, micro drone battery holders, portable medical testing device sensor ports, and industrial IoT modules, making it the preferred lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solution.

The Sinyinda (SYC) SYCBF04P6ASMT (PA9T gold-plated version) is not simply a "reduced-pin downsized version," but rather a 6Pin SMT female connector with positioning posts specifically designed to retain complete BMS basic safety protocols for space-constrained devices. This product, with its extreme three-dimensional dimensions of 16.5×6.5×5.7mm, becomes the smallest physical unit in the 2.5mm pitch series that can still support the full functional definition of "2P power + 1P temperature + 1P ID identification + 2P SMBus/I2C communication" — avoiding the safety hazards of sacrificing temperature monitoring or ID identification in 4-5Pin solutions, while eliminating the space redundancy of 7Pin and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin current capacity and 30A total current capacity, the SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the functional completeness baseline solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "non-negotiable basic safety protocols."

The Sinyinda (SYC) SYCBF04P5ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 5-Pin SMT female connector with pegs specifically designed to retain basic power plus single-channel signal functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 14×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports the basic functional definition of "2P power + 1P temperature/ID + 2P SMBus/I2C communication"—avoiding the safety risks of sacrificing temperature monitoring or communication in 3-4 Pin solutions, while eliminating the spatial redundancy of 6-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 25A total current capacity, the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal minimalist functional solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "indispensable basic functionality."

The Sinyinda (SYC) SYCBF04P4ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 4-Pin SMT female connector with pegs specifically designed to retain pure power transmission functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 11.5×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports dual-parallel high-current transmission of "2P positive + 2P negative"—avoiding the temperature rise risks of sacrificing current redundancy in 3-Pin solutions, while eliminating the spatial redundancy of 5-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 20A total current capacity (dual parallel), the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal pure power solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "stable high-current transmission."

Sinyinda (SYC) SYCBM02P10R4 (PA9T Gold-Plated Version) is not simply a "multi-pin expansion board," but a 10Pin 90° angled plug male connector specifically designed to retain complete power + signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 29.5×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "4P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 12Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 50A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal high-integration solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P9R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 9Pin 90° angled plug male connector specifically designed to retain complete power + complex signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 27×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "3P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 10Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 45A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal asymmetric-signal solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P8R4 (PA9T Gold-Plated Version) is not simply a "standard version with even pin count," but an 8-Pin 90° angled plug male connector specifically designed to retain full standard BMS protocol capability for mature lithium battery platforms. With its golden three-dimensional dimensions of 24.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the full-featured definition of "2P power + 2P temperature + 2P ID + 2P SMBus/CAN communication"—avoiding the scalability limitations caused by sacrificing redundant channels in 6-pin solutions, while eliminating the space waste of 9-10 pins in standardized equipment. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in everyday use environments. With a single-pin current rating of 5A and a total current rating of 40A (dual parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the golden balance optimal solution for engineers under the dual rigid requirements of "millimeter-level space constraints" and "standard BMS protocol integrity."

Sinyinda (SYC) SYCBM02P7R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 7-Pin 90° angled plug male connector specifically designed to retain core BMS protocol capability for lightweight smart devices. With its ultimate three-dimensional dimensions of 22×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the precise functional definition of "3P power + 2P temperature + 2P ID/SMBus communication"—avoiding the temperature rise risk caused by sacrificing power redundancy in 6-pin solutions, while eliminating the space waste of 8 pins and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With a single-pin current rating of 5A and a total current rating of 35A (triple parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the asymmetric compact optimal solution for engineers under the dual rigid requirements of "sub-millimeter-level space constraints" and "core BMS protocol integrity."

SYC SYCBM02P6R4 (PA9T Gold-Plated Version) from Sinyinda (SYC) is not simply an "entry-level stripped-down version," but a 6-Pin 90° right-angle male connector specifically designed to retain basic BMS safety protocols for ultra-compact smart devices. With extreme dimensions of 19.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still support the complete basic protocol of "2P power + 2P temperature + 2P ID/SMBus communication"—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 7-Pin or more configurations in miniature devices. Combined with the PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plated contact area (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current-carrying capacity per pin and 30A total (dual parallel), the 90° right-angle plug structure paired with the left-side polarization key ensures PCB axial retention force ≥70N and radial retention force ≥50N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal full-featured solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "lithium battery safety bottom lines."

The Sinyinda (SYC) SYCBM02P5R4 (PA9T Gold-Plated Edition) is not a simple "entry-level stripped-down version," but a 5-Pin 90° right-angle plug male connector specifically designed to preserve the lithium battery thermal safety baseline for ultra-compact smart devices. With sub-millimeter three-dimensional dimensions of 17×4.0×8.0mm, this product becomes the smallest physical unit in the 2.5mm pitch series that can still carry the "2P power + 1P temperature + 2P ID/communication" minimum safety protocol—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 6-Pin and above in micro devices. Combined with PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current per pin and 25A total current (dual parallel power), the 90° right-angle plug structure paired with left anti-misinsertion keying ensures PCB axial retention force ≥60N and radial retention force ≥45N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the minimalist safety optimal solution for engineers under the dual rigid requirements of "sub-millimeter spatial constraints" and "lithium battery thermal safety red lines."

The SYCBF04P11ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is an 11Pin standard lithium battery connector female socket (SMT with mounting posts) designed for scenarios requiring medium power density 5A-class power/medium-to-low-speed signal mixed transmission plus high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 11Pin medium-density design, with a PCB footprint width of only approximately 30mm, saving 40% space compared to traditional 5.0mm 11Pin solutions. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), and it can withstand a 260°C lead-free reflow peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level medium-to-low-speed signals. The rated current per pin is 5A, with a total current capacity of 55A, supporting flexible configurations of "4Pin power + 7Pin signal" or "6Pin power + 5Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides axial retention force ≥60N and radial retention force ≥40N on the PCB, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for smart home appliance control boards, light EV BMS, portable medical devices, industrial sensor modules, and other application scenarios with rigid requirements for "moderate power + miniaturization + 260°C process + high reliability + high cost-effectiveness," making it the preferred universal 5A-class 2.5mm pitch SMT lithium battery interconnect solution.

SYCBF04P10ASMT (PA9T gold-plated version) launched by SYC is a 10-Pin compact lithium battery connector female header (SMT with positioning posts) specifically designed for medium power density 5A-class power/mid-to-low-speed signal hybrid transmission + high-temperature SMT process scenarios. This product adopts a 2.5mm standard pitch + 10-Pin optimized pin count design, with a PCB footprint width of only approximately 27.5mm, saving 40% space compared to traditional 5.0mm 10-Pin solutions, and further reducing by 8% compared to the same series 11-Pin version, providing efficient interconnection possibilities for ultra-compact spaces in smart wearables, handheld tools, portable energy storage, and more; combined with PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current capacity is 50A, supporting flexible configurations of "4-Pin power + 6-Pin signal" or "5-Pin power + 5-Pin signal". The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suitable for application scenarios with rigid requirements for "extreme miniaturization + moderate power + 260°C process + high reliability" such as smart wearable device main control boards, handheld power tool battery packs, portable energy storage power supply BMS, and industrial IoT sensor modules, making it the preferred choice for compact 5A-class 2.5mm pitch SMT lithium battery interconnection solutions.

SYCBF04P9ASMT (PA9T Gold-Plated Version) launched by Sinyinda (SYC) is a 9-Pin lightweight lithium battery connector female header (SMT with positioning posts) specifically designed for scenarios requiring basic power density of 5A-level power/mid-to-low-speed signal hybrid transmission + high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 9-Pin optimized pin count design, with a PCB footprint width of only approximately 25mm, saving 40% space compared to traditional 5.0mm 9-Pin solutions, and further reducing by 9% compared to the same series 10-Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart bracelets, TWS earbuds, micro drones, and portable medical instruments. Combined with the high-performance PA9T base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperatures (10-30s) without deformation, blistering, or warping. Key upgrade: The contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current is 45A, supporting flexible configurations of "3-Pin power + 6-Pin signal" or "4-Pin power + 5-Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, TWS earbud charging case interfaces, micro drone battery holders, and portable medical testing device sensor ports, making it the preferred choice for lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solutions.

Sinyinda (SYC) SYCBF04P8ASMT (PA9T Gold-Plated Version) is not simply a "fewer-pin version" but an SMT female header with positioning posts specifically designed for the 8-Pin de facto standard interface in consumer electronics and light power systems. This product adopts a 2.5mm pitch 8-Pin layout with a PCB width of only approximately 22.5mm, making it the optimal physical layer solution for BMS communication protocols and power transmission in current TWS earbuds, smartwatches, handheld gimbals, portable energy storage, and other devices—avoiding the functional bottleneck of 6-Pin while eliminating routing redundancy of 9-11 Pin on compact PCBs. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per-pin current and 40A total current, it supports flexible configurations of "3P power + 5P signal" or "4P power + 4P signal." The key advantage is that the 8-Pin arrangement natively matches mainstream BMS/PMIC chips, enabling direct signal connection without flying wires, significantly reducing EMI risks and assembly complexity. The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the optimal design safety margin solution for engineers under the triangular constraints of "functional completeness, space utilization, and supply chain universality."

The SYCBF04P7ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is a 7Pin ultra-miniaturized lithium battery connector female socket (SMT with positioning posts) specifically designed for scenarios requiring 5A-level basic power density for power/medium-to-low-speed signal hybrid transmission combined with high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 7Pin optimized pin count design, with a PCB footprint width of only approximately 19mm, saving 40% space compared to traditional 5.0mm 7Pin solutions and further reducing by 15% compared to the same series 8Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart wearables, micro drones, and portable medical instruments. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring stable dual transmission of 5A high current and MHz-level medium-to-low-speed signals. Each pin is rated at 5A current carrying capacity, with a total current capacity of 35A, supporting flexible configurations of "3Pin power + 4Pin signal" or "4Pin power + 3Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating cycles and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, micro drone battery holders, portable medical testing device sensor ports, and industrial IoT modules, making it the preferred lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solution.

The Sinyinda (SYC) SYCBF04P6ASMT (PA9T gold-plated version) is not simply a "reduced-pin downsized version," but rather a 6Pin SMT female connector with positioning posts specifically designed to retain complete BMS basic safety protocols for space-constrained devices. This product, with its extreme three-dimensional dimensions of 16.5×6.5×5.7mm, becomes the smallest physical unit in the 2.5mm pitch series that can still support the full functional definition of "2P power + 1P temperature + 1P ID identification + 2P SMBus/I2C communication" — avoiding the safety hazards of sacrificing temperature monitoring or ID identification in 4-5Pin solutions, while eliminating the space redundancy of 7Pin and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin current capacity and 30A total current capacity, the SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the functional completeness baseline solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "non-negotiable basic safety protocols."

The Sinyinda (SYC) SYCBF04P5ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 5-Pin SMT female connector with pegs specifically designed to retain basic power plus single-channel signal functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 14×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports the basic functional definition of "2P power + 1P temperature/ID + 2P SMBus/I2C communication"—avoiding the safety risks of sacrificing temperature monitoring or communication in 3-4 Pin solutions, while eliminating the spatial redundancy of 6-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 25A total current capacity, the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal minimalist functional solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "indispensable basic functionality."

The Sinyinda (SYC) SYCBF04P4ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 4-Pin SMT female connector with pegs specifically designed to retain pure power transmission functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 11.5×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports dual-parallel high-current transmission of "2P positive + 2P negative"—avoiding the temperature rise risks of sacrificing current redundancy in 3-Pin solutions, while eliminating the spatial redundancy of 5-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 20A total current capacity (dual parallel), the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal pure power solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "stable high-current transmission."

Sinyinda (SYC) SYCBM02P10R4 (PA9T Gold-Plated Version) is not simply a "multi-pin expansion board," but a 10Pin 90° angled plug male connector specifically designed to retain complete power + signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 29.5×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "4P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 12Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 50A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal high-integration solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P9R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 9Pin 90° angled plug male connector specifically designed to retain complete power + complex signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 27×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "3P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 10Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 45A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal asymmetric-signal solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P8R4 (PA9T Gold-Plated Version) is not simply a "standard version with even pin count," but an 8-Pin 90° angled plug male connector specifically designed to retain full standard BMS protocol capability for mature lithium battery platforms. With its golden three-dimensional dimensions of 24.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the full-featured definition of "2P power + 2P temperature + 2P ID + 2P SMBus/CAN communication"—avoiding the scalability limitations caused by sacrificing redundant channels in 6-pin solutions, while eliminating the space waste of 9-10 pins in standardized equipment. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in everyday use environments. With a single-pin current rating of 5A and a total current rating of 40A (dual parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the golden balance optimal solution for engineers under the dual rigid requirements of "millimeter-level space constraints" and "standard BMS protocol integrity."

Sinyinda (SYC) SYCBM02P7R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 7-Pin 90° angled plug male connector specifically designed to retain core BMS protocol capability for lightweight smart devices. With its ultimate three-dimensional dimensions of 22×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the precise functional definition of "3P power + 2P temperature + 2P ID/SMBus communication"—avoiding the temperature rise risk caused by sacrificing power redundancy in 6-pin solutions, while eliminating the space waste of 8 pins and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With a single-pin current rating of 5A and a total current rating of 35A (triple parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the asymmetric compact optimal solution for engineers under the dual rigid requirements of "sub-millimeter-level space constraints" and "core BMS protocol integrity."

SYC SYCBM02P6R4 (PA9T Gold-Plated Version) from Sinyinda (SYC) is not simply an "entry-level stripped-down version," but a 6-Pin 90° right-angle male connector specifically designed to retain basic BMS safety protocols for ultra-compact smart devices. With extreme dimensions of 19.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still support the complete basic protocol of "2P power + 2P temperature + 2P ID/SMBus communication"—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 7-Pin or more configurations in miniature devices. Combined with the PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plated contact area (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current-carrying capacity per pin and 30A total (dual parallel), the 90° right-angle plug structure paired with the left-side polarization key ensures PCB axial retention force ≥70N and radial retention force ≥50N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal full-featured solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "lithium battery safety bottom lines."

The Sinyinda (SYC) SYCBM02P5R4 (PA9T Gold-Plated Edition) is not a simple "entry-level stripped-down version," but a 5-Pin 90° right-angle plug male connector specifically designed to preserve the lithium battery thermal safety baseline for ultra-compact smart devices. With sub-millimeter three-dimensional dimensions of 17×4.0×8.0mm, this product becomes the smallest physical unit in the 2.5mm pitch series that can still carry the "2P power + 1P temperature + 2P ID/communication" minimum safety protocol—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 6-Pin and above in micro devices. Combined with PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current per pin and 25A total current (dual parallel power), the 90° right-angle plug structure paired with left anti-misinsertion keying ensures PCB axial retention force ≥60N and radial retention force ≥45N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the minimalist safety optimal solution for engineers under the dual rigid requirements of "sub-millimeter spatial constraints" and "lithium battery thermal safety red lines."

The SYCBF04P11ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is an 11Pin standard lithium battery connector female socket (SMT with mounting posts) designed for scenarios requiring medium power density 5A-class power/medium-to-low-speed signal mixed transmission plus high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 11Pin medium-density design, with a PCB footprint width of only approximately 30mm, saving 40% space compared to traditional 5.0mm 11Pin solutions. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), and it can withstand a 260°C lead-free reflow peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level medium-to-low-speed signals. The rated current per pin is 5A, with a total current capacity of 55A, supporting flexible configurations of "4Pin power + 7Pin signal" or "6Pin power + 5Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides axial retention force ≥60N and radial retention force ≥40N on the PCB, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for smart home appliance control boards, light EV BMS, portable medical devices, industrial sensor modules, and other application scenarios with rigid requirements for "moderate power + miniaturization + 260°C process + high reliability + high cost-effectiveness," making it the preferred universal 5A-class 2.5mm pitch SMT lithium battery interconnect solution.

SYCBF04P10ASMT (PA9T gold-plated version) launched by SYC is a 10-Pin compact lithium battery connector female header (SMT with positioning posts) specifically designed for medium power density 5A-class power/mid-to-low-speed signal hybrid transmission + high-temperature SMT process scenarios. This product adopts a 2.5mm standard pitch + 10-Pin optimized pin count design, with a PCB footprint width of only approximately 27.5mm, saving 40% space compared to traditional 5.0mm 10-Pin solutions, and further reducing by 8% compared to the same series 11-Pin version, providing efficient interconnection possibilities for ultra-compact spaces in smart wearables, handheld tools, portable energy storage, and more; combined with PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current capacity is 50A, supporting flexible configurations of "4-Pin power + 6-Pin signal" or "5-Pin power + 5-Pin signal". The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suitable for application scenarios with rigid requirements for "extreme miniaturization + moderate power + 260°C process + high reliability" such as smart wearable device main control boards, handheld power tool battery packs, portable energy storage power supply BMS, and industrial IoT sensor modules, making it the preferred choice for compact 5A-class 2.5mm pitch SMT lithium battery interconnection solutions.

SYCBF04P9ASMT (PA9T Gold-Plated Version) launched by Sinyinda (SYC) is a 9-Pin lightweight lithium battery connector female header (SMT with positioning posts) specifically designed for scenarios requiring basic power density of 5A-level power/mid-to-low-speed signal hybrid transmission + high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 9-Pin optimized pin count design, with a PCB footprint width of only approximately 25mm, saving 40% space compared to traditional 5.0mm 9-Pin solutions, and further reducing by 9% compared to the same series 10-Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart bracelets, TWS earbuds, micro drones, and portable medical instruments. Combined with the high-performance PA9T base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperatures (10-30s) without deformation, blistering, or warping. Key upgrade: The contact area adopts a gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring dual stable transmission of 5A high current and MHz-level mid-to-low-speed signals. Single-pin rated current is 5A, total current is 45A, supporting flexible configurations of "3-Pin power + 6-Pin signal" or "4-Pin power + 5-Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, TWS earbud charging case interfaces, micro drone battery holders, and portable medical testing device sensor ports, making it the preferred choice for lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solutions.

Sinyinda (SYC) SYCBF04P8ASMT (PA9T Gold-Plated Version) is not simply a "fewer-pin version" but an SMT female header with positioning posts specifically designed for the 8-Pin de facto standard interface in consumer electronics and light power systems. This product adopts a 2.5mm pitch 8-Pin layout with a PCB width of only approximately 22.5mm, making it the optimal physical layer solution for BMS communication protocols and power transmission in current TWS earbuds, smartwatches, handheld gimbals, portable energy storage, and other devices—avoiding the functional bottleneck of 6-Pin while eliminating routing redundancy of 9-11 Pin on compact PCBs. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per-pin current and 40A total current, it supports flexible configurations of "3P power + 5P signal" or "4P power + 4P signal." The key advantage is that the 8-Pin arrangement natively matches mainstream BMS/PMIC chips, enabling direct signal connection without flying wires, significantly reducing EMI risks and assembly complexity. The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the optimal design safety margin solution for engineers under the triangular constraints of "functional completeness, space utilization, and supply chain universality."

The SYCBF04P7ASMT (PA9T gold-plated version) launched by Sinyinda (SYC) is a 7Pin ultra-miniaturized lithium battery connector female socket (SMT with positioning posts) specifically designed for scenarios requiring 5A-level basic power density for power/medium-to-low-speed signal hybrid transmission combined with high-temperature SMT processes. This product adopts a 2.5mm standard pitch + 7Pin optimized pin count design, with a PCB footprint width of only approximately 19mm, saving 40% space compared to traditional 5.0mm 7Pin solutions and further reducing by 15% compared to the same series 8Pin version, providing efficient interconnection possibilities for ultra-compact spaces such as smart wearables, micro drones, and portable medical instruments. Combined with the PA9T high-performance base material, the heat deflection temperature is ≥310°C (1.8MPa), capable of withstanding 260°C lead-free reflow soldering peak temperature (10-30s) without deformation, blistering, or warping. Key upgrade: the contact area adopts gold-plating process (Au 0.05-0.1μm over Ni), significantly reducing contact resistance to ≤8mΩ, greatly enhancing oxidation resistance and fretting corrosion resistance, ensuring stable dual transmission of 5A high current and MHz-level medium-to-low-speed signals. Each pin is rated at 5A current carrying capacity, with a total current capacity of 35A, supporting flexible configurations of "3Pin power + 4Pin signal" or "4Pin power + 3Pin signal." The SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N and radial retention force ≥40N, capable of withstanding daily mating/unmating cycles and mild vibration stress. It is particularly suited for applications with rigid requirements for "extreme miniaturization + basic power + 260°C process + high reliability," such as smart bracelet main control boards, micro drone battery holders, portable medical testing device sensor ports, and industrial IoT modules, making it the preferred lightweight 5A-level 2.5mm pitch SMT lithium battery interconnection solution.

The Sinyinda (SYC) SYCBF04P6ASMT (PA9T gold-plated version) is not simply a "reduced-pin downsized version," but rather a 6Pin SMT female connector with positioning posts specifically designed to retain complete BMS basic safety protocols for space-constrained devices. This product, with its extreme three-dimensional dimensions of 16.5×6.5×5.7mm, becomes the smallest physical unit in the 2.5mm pitch series that can still support the full functional definition of "2P power + 1P temperature + 1P ID identification + 2P SMBus/I2C communication" — avoiding the safety hazards of sacrificing temperature monitoring or ID identification in 4-5Pin solutions, while eliminating the space redundancy of 7Pin and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin current capacity and 30A total current capacity, the SMT structure with dual positioning posts (height 2.0mm) provides PCB axial retention force ≥60N, ensuring long-term reliability under frequent mating/unmating and mild vibration. This is the functional completeness baseline solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "non-negotiable basic safety protocols."

The Sinyinda (SYC) SYCBF04P5ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 5-Pin SMT female connector with pegs specifically designed to retain basic power plus single-channel signal functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 14×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports the basic functional definition of "2P power + 1P temperature/ID + 2P SMBus/I2C communication"—avoiding the safety risks of sacrificing temperature monitoring or communication in 3-4 Pin solutions, while eliminating the spatial redundancy of 6-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 25A total current capacity, the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal minimalist functional solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "indispensable basic functionality."

The Sinyinda (SYC) SYCBF04P4ASMT (PA9T Gold-Plated Version) is not a simple "reduced-pin downsized version," but a 4-Pin SMT female connector with pegs specifically designed to retain pure power transmission functionality for sub-millimeter space-constrained devices. With its extreme three-dimensional dimensions of 11.5×6.5×5.7mm, this product becomes the smallest physical unit in the 2.5mm pitch series that still supports dual-parallel high-current transmission of "2P positive + 2P negative"—avoiding the temperature rise risks of sacrificing current redundancy in 3-Pin solutions, while eliminating the spatial redundancy of 5-Pin and above in miniature devices. Combined with PA9T base material (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on contact areas (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/salt spray environments. With 5A per pin and 20A total current capacity (dual parallel), the SMT structure with dual positioning pegs (height 2.0mm) ensures PCB axial retention force ≥60N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal pure power solution for engineers facing the dual rigid requirements of "sub-millimeter spatial constraints" and "stable high-current transmission."

Sinyinda (SYC) SYCBM02P10R4 (PA9T Gold-Plated Version) is not simply a "multi-pin expansion board," but a 10Pin 90° angled plug male connector specifically designed to retain complete power + signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 29.5×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "4P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 12Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 50A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal high-integration solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P9R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 9Pin 90° angled plug male connector specifically designed to retain complete power + complex signal integration capability for high-power-density devices. With its extreme three-dimensional dimensions of 27×4.0×8.0mm, it becomes the smallest physical unit in the 2.5mm pitch series that can still carry the full-function definition of "3P power + 2P temperature + 2P ID + 2P CAN/SMBus communication"—avoiding both the insufficient expandability of 8Pin solutions that sacrifice redundant channels, and the space waste of 10Pin and above in compact devices. Combined with the PA9T substrate (HDT≥310℃), it withstands 260℃ lead-free reflow soldering peak temperatures without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in oil-contaminated/salt-spray environments. With 5A per-pin current-carrying capacity and 45A total current capacity, the 90° angled plug structure paired with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under high-vibration conditions. This is the optimal asymmetric-signal solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "high-power transmission safety."

Sinyinda (SYC) SYCBM02P8R4 (PA9T Gold-Plated Version) is not simply a "standard version with even pin count," but an 8-Pin 90° angled plug male connector specifically designed to retain full standard BMS protocol capability for mature lithium battery platforms. With its golden three-dimensional dimensions of 24.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the full-featured definition of "2P power + 2P temperature + 2P ID + 2P SMBus/CAN communication"—avoiding the scalability limitations caused by sacrificing redundant channels in 6-pin solutions, while eliminating the space waste of 9-10 pins in standardized equipment. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in everyday use environments. With a single-pin current rating of 5A and a total current rating of 40A (dual parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the golden balance optimal solution for engineers under the dual rigid requirements of "millimeter-level space constraints" and "standard BMS protocol integrity."

Sinyinda (SYC) SYCBM02P7R4 (PA9T Gold-Plated Version) is not simply a "reduced-pin downsized version," but a 7-Pin 90° angled plug male connector specifically designed to retain core BMS protocol capability for lightweight smart devices. With its ultimate three-dimensional dimensions of 22×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still carry the precise functional definition of "3P power + 2P temperature + 2P ID/SMBus communication"—avoiding the temperature rise risk caused by sacrificing power redundancy in 6-pin solutions, while eliminating the space waste of 8 pins and above in micro devices. Combined with the PA9T base material (HDT≥310°C), it can withstand a 260°C lead-free reflow soldering peak temperature without deformation; the gold-plating process on the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With a single-pin current rating of 5A and a total current rating of 35A (triple parallel), the 90° angled plug structure combined with the left-side polarization key ensures PCB axial retention force ≥80N and radial retention force ≥60N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the asymmetric compact optimal solution for engineers under the dual rigid requirements of "sub-millimeter-level space constraints" and "core BMS protocol integrity."

SYC SYCBM02P6R4 (PA9T Gold-Plated Version) from Sinyinda (SYC) is not simply an "entry-level stripped-down version," but a 6-Pin 90° right-angle male connector specifically designed to retain basic BMS safety protocols for ultra-compact smart devices. With extreme dimensions of 19.5×4.0×8.0mm, this product is the smallest physical unit in the 2.5mm pitch series that can still support the complete basic protocol of "2P power + 2P temperature + 2P ID/SMBus communication"—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 7-Pin or more configurations in miniature devices. Combined with the PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plated contact area (Au 0.05-0.1μm over Ni) reduces contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current-carrying capacity per pin and 30A total (dual parallel), the 90° right-angle plug structure paired with the left-side polarization key ensures PCB axial retention force ≥70N and radial retention force ≥50N, guaranteeing long-term reliability under frequent mating cycles and mild vibration. This is the optimal full-featured solution for engineers facing the dual rigid requirements of "millimeter-level space constraints" and "lithium battery safety bottom lines."

The Sinyinda (SYC) SYCBM02P5R4 (PA9T Gold-Plated Edition) is not a simple "entry-level stripped-down version," but a 5-Pin 90° right-angle plug male connector specifically designed to preserve the lithium battery thermal safety baseline for ultra-compact smart devices. With sub-millimeter three-dimensional dimensions of 17×4.0×8.0mm, this product becomes the smallest physical unit in the 2.5mm pitch series that can still carry the "2P power + 1P temperature + 2P ID/communication" minimum safety protocol—avoiding the thermal runaway risk caused by sacrificing temperature monitoring in 4-Pin solutions, while eliminating the space waste of 6-Pin and above in micro devices. Combined with PA9T substrate (HDT≥310°C), it withstands 260°C lead-free reflow soldering peak temperatures without deformation; the gold-plating process in the contact area (Au 0.05-0.1μm over Ni) compresses contact resistance to ≤8mΩ, effectively suppressing electrochemical corrosion in sweat/sebum environments. With 5A current per pin and 25A total current (dual parallel power), the 90° right-angle plug structure paired with left anti-misinsertion keying ensures PCB axial retention force ≥60N and radial retention force ≥45N, guaranteeing long-term reliability under frequent mating/unmating and mild vibration. This is the minimalist safety optimal solution for engineers under the dual rigid requirements of "sub-millimeter spatial constraints" and "lithium battery thermal safety red lines."