Product Overview

Sinyinda SYCBCHF01P2CSMT is a 2Pin high-current female connector (SMT version) specifically designed for 20A-class pure power lithium battery transmission scenarios. This product features 2 identical 20A power terminals, supporting 2-way parallel current sharing to achieve 40A continuous current-carrying capacity, and possesses true single-pin failure redundancy—even if one pin fails, the remaining pin can still carry a 20A regular load without interrupting power supply. It adopts a copper-nickel plated (50-80μ") high-wear-resistant contact process, with a plug-in life of ≥1000 cycles and stable contact resistance ≤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 dual-hole positioning design ensures SMT accuracy of ±0.1mm, and the asymmetric housing provides physical anti-reverse insertion protection, with a recommended plug-in life of 1000 cycles. It is particularly suited for application scenarios with rigid requirements for "20A-class power + fully automated assembly + zero manual intervention," such as smart wearable device battery compartments, TWS earphone charging cases, micro drone quick-release battery ports, and medical portable device power interfaces, precisely mating with the male connector SYCBCHM01P2R1 to form a complete 20A-class SMT lithium battery interconnect solution.

Core Advantages Exclusive to 20A SMT Power Terminals (2×20A Current-Sharing Version)

• 2×20A Homogeneous Terminals + Single-Pin Failure Redundancy:The 2 terminals are completely identical in size, material, plating, and pad specifications, with an initial contact resistance dispersion of <5%, ensuring a current distribution deviation of <±3% across each pin under 40A load; when a single pin fails due to contamination/damage/aging, the remaining pin automatically carries a 20A regular 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 impact of TWS earbud charging cases (5,000 cycles without cracking) and vibration from micro-drone drops; CTI value ≥250V, meets UL94 V0 flame retardancy rating, heat deflection temperature ≥240℃ (1.8MPa), short-term resistance to 150℃ peak temperature without softening, ensuring housing deformation does not occur under 40A transient surge.
• SMT automatic placement process compatibility:Terminal pad dimensions standardized (3.0×2.5mm), compatible with mainstream reflow soldering profiles (peak temperature 245℃±5℃, duration 60-90s); dual-hole positioning design (Φ1.85mm) ensures placement 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 transmission for dual verification to ensure full, void-free solder joints.
• Asymmetric housing + guide groove dual keying:The housing features a trapezoidal profile with asymmetric guide ribs and grooves, ensuring the 2-pin position has a unique match, completely eliminating reverse insertion risk; guide groove depth of 2.5mm ensures all contacts are fully aligned before mating, preventing arc damage from hot-plugging, and supports blind mating operation.
• -40℃~+105℃ wide-temperature current-sharing stability:PA66 base material has been modified for low-temperature toughness, with no cracking upon impact at -40℃; at high temperature 105℃, the simultaneous rise rate of contact resistance for the 2 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 over long-term use.

Vertical application guide for 20A SMT power connectors