Product Overview

The Sinyinda SYCBCHF01P6CSMT is a 6Pin high-current female connector (SMT mounting version) designed specifically for 120A-class pure power lithium battery transmission scenarios. This product adopts 6 identical 20A power terminals, supports 6-way parallel current sharing to achieve 120A continuous current carrying capacity, and features true N+2 redundancy capability—even if a single pin fails, the remaining 5 pins can still carry a 100A regular load without interrupting power supply; when two pins fail, it can still maintain 80A emergency operation. It adopts a copper nickel-plated (50-80μ") high-wear-resistant contact process, with a mating cycle life of ≥1000 times and stable contact resistance of ≤3mΩ; the PA66 insulating substrate combines mechanical strength and temperature resistance, with a rated voltage of DC 250V and an operating temperature range of -40℃ to +105℃. The six-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 suited for application scenarios with rigid requirements for "120A-class power + fully automated assembly + zero manual intervention," such as TWS earphone charging case super-fast-charging ports, smartwatch magnetic charging bases, micro drone battery interfaces, and medical portable device power modules, and pairs precisely with the male connector SYCBCHM01P6R1 to form a complete 120A-class SMT lithium battery interconnection solution.

Core Advantages Exclusive to 120A SMT Power Terminals (6×20A Current Sharing Version)

• 6×20A Homogeneous Terminals + N+2 Redundancy Architecture:The 6 terminals are completely identical in size, material, plating, and pad specifications, with an initial contact resistance dispersion of <5%, ensuring that the current distribution deviation among pins is <±3% under a 120A load; when a single pin fails, the remaining 5 pins automatically share the current to carry a 100A regular load; when two pins fail, it can still maintain 80A emergency operation without system shutdown, extending MTTR from emergency repair to planned maintenance windows and improving availability to 99.95%.
• 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, withstands frequent open/close impacts of TWS earbud cases (5000 cycles without cracking) and micro drone drop vibration; CTI value ≥250V, meets UL94 V0 flame rating, heat deflection temperature ≥240°C (1.8MPa), short-term tolerance of 150°C peak temperature without softening, ensuring housing does not deform under 120A transient surge.
• 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 six-hole positioning design (Φ1.85mm) ensures SMT mounting accuracy of ±0.1mm, avoiding misalignment that could cause cold solder joints or short circuits; for mass production, it is recommended to use AOI optical inspection + X-Ray penetration dual verification to ensure full and void-free solder joints.
• Asymmetric housing + guide groove dual keying:Housing adopts trapezoidal profile + asymmetric guide rib/groove design, 6Pin positions uniquely matched, completely eliminating reverse insertion risk; guide groove depth 2.5mm, ensuring all contacts are fully aligned before mating, avoiding arc damage from hot plugging, supporting blind mating operation.
• -40℃~+105℃ wide-temperature current-sharing stability:PA66 base material low-temperature toughness optimized through modification, no cracking at -40°C impact; at high temperature 105°C, 6-pin contact resistance synchronous rise rate <8%, avoiding current imbalance or redundancy failure caused by temperature drift differences; sealing O-ring (optional) compression set rate <20%, maintaining IP54 protection rating during long-term use.

Application Guide for 120A SMT Power in Vertical Scenarios