Product Overview

The Sinyinda SYCBCHF01P3CSMT is a 3Pin high-current female connector (SMT mounting version) designed for 60A-class pure power lithium battery transmission scenarios. This product adopts 3 identical 20A power terminals, supporting 3-way parallel current sharing to achieve 60A continuous current capacity, and features true single-pin failure redundancy—even if one pin fails, the remaining 2 pins can still carry a 40A normal load without interrupting power supply. It adopts a copper nickel-plated (50-80μ") high-wear-resistance contact process, with a mating cycle life of ≥1000 times and stable contact resistance of ≤3mΩ; the PA66 insulating substrate balances mechanical strength and temperature resistance, with a rated voltage of DC 250V and an operating temperature range of -40℃~+105℃. The three-hole positioning design ensures SMT mounting accuracy of ±0.1mm, the asymmetric housing provides physical reverse-connection protection, and the recommended mating cycle life is 1000 times. It is particularly suitable for application scenarios with rigid requirements for "60A-class power + fully automatic assembly + zero manual intervention," such as TWS earbud charging case fast-charge ports, smartwatch magnetic charging bases, micro drone battery interfaces, and medical portable device power modules, and pairs precisely with the male connector SYCBCHM01P3R1 to form a complete 60A-class SMT lithium battery interconnect solution.

Core Advantages Exclusive to 60A SMT Power Terminals (3×20A Current Sharing Version)

• 3×20A Homogeneous Terminals + Single-Pin Failure Redundancy:The 3 terminals are completely identical in size, material, plating, and pad specifications, with an initial contact resistance deviation of <5%, ensuring that the current distribution deviation among pins is <±3% under a 60A load; when a single pin fails due to contamination, damage, or aging, the remaining 2 pins automatically share the current to carry a 40A normal load, eliminating the need for system shutdown, extending MTTR from emergency repair to planned maintenance windows, and improving availability to 99.9%.
• Copper-Nickel Plated (50-80μ") High-Wear-Resistant Contacts:The nickel plating thickness reaches 50-80μ" (1.27-2.03μm), with a hardness of HV400-500, mating wear of <0.1μm per cycle, and a contact resistance change rate of <10% after 1000 mating cycles; the nickel layer exhibits excellent chemical stability, with salt spray corrosion resistance of >96h (5% NaCl), making it suitable for outdoor smart wearables, sweat environments in sports earphones, and high-altitude low-temperature conditions for drones, at a cost of only 1/5 of gold-plating solutions.
• High-Strength PA66 Substrate for Load Bearing:Tensile strength ≥80MPa, flexural strength ≥120MPa, capable of withstanding frequent open/close impacts of TWS earbud cases (5000 cycles without cracking) and drop vibrations of micro drones; CTI value ≥250V, meeting UL94 V0 flame retardant rating, heat deflection temperature ≥240℃ (1.8MPa), short-term tolerance of 150℃ peak temperature without softening, ensuring the housing does not deform under 60A transient surge conditions.
• SMT automatic placement process compatibility:Terminal pad dimensions are standardized (3.0×2.5mm), compatible with mainstream reflow soldering profiles (peak temperature 245℃±5℃, duration 60-90s); the three-hole positioning design (Φ1.85mm) ensures SMT mounting accuracy of ±0.1mm, preventing misalignment that could cause cold solder joints or short circuits; for mass production, it is recommended to use AOI optical inspection combined with X-Ray inspection for dual verification to ensure full, void-free solder joints.
• Asymmetric housing + guide groove dual keying:The housing adopts a trapezoidal profile with asymmetric guide ribs and grooves design, with the 3-pin position uniquely matched, completely eliminating the risk of reverse insertion; the guide groove depth is 2.5mm, ensuring all contacts are fully aligned before mating, preventing arc damage during hot plugging, and supporting blind mating operation.
• -40℃~+105℃ wide-temperature current-sharing stability:The PA66 base material has been modified for optimized low-temperature toughness, with no cracking upon impact at -40℃; at high temperature 105℃, the simultaneous rise rate of contact resistance for the 3 pins is <8%, avoiding current imbalance or redundancy failure caused by temperature drift differences; the sealing O-ring (optional) has a compression set rate of <20%, maintaining IP54 protection rating during long-term use.

Vertical Scenario 60A SMT Power Application Guide