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3652 Series 1.25mm Board-to-Board Connectors | Compact, Reliable, and Precise Interconnections in Tight Spaces
As industrial automation and embedded computing systems continue to evolve toward higher density and performance, the stability of signal transmission and installation precision of board-to-board connectors in compact spaces are increasingly critical to the reliable operation of these systems. WCON Electronics’ 3652 Series is a compact board-to-board connector with a 1.25mm pitch, featuring high-performance signal transmission capabilities and supporting both SMT and DIP mounting. The SMT version is equipped with positioning pins to ensure precise installation and incorporates a polarized key design to guarantee correct mating between male and female connectors.
Structurally, the female terminals feature a tuning-fork-style dual-contact design, while the male terminals incorporate a unique circular pin design, effectively enhancing contact stability and signal integrity. The 3652 Series board-to-board connectors are single-row; for higher density, the dual-row 3651 Series is available. Both series share the same stacking height, allowing for flexible adaptation to different PCB spaces.

| Product Highlights | Performance Specifications |
| - Polarized design for easy assembly; | - Rated current: 0.5A |
| - positioning pin design for stable connections; | - Rated Voltage: 50V AC |
| - Female terminals feature a fork design for more stable signal transmission. | - Contact Resistance: 20mΩ Max |
| - Insulation Resistance: 500MΩ Min | |
| - Withstand Voltage: 500V AC/1 min | |
| - Operating Temperature: -40°C to +105°C |
| Standards | Applications |
| - EIA-364 | - Industrial Control and Automation |
| - Consumer Electronics | |
Data Sheet
The following are the detailed performance specifications for the 3652 series of industrial connectors, provided as a reference for product selection.
