Souriau 851 series are military-grade circular connectors used in medical, defense, and industrial equipment where MIL-spec reliability and environmental sealing are required at moderate cost.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Pin A | Signal or power contact A | I/O |
| 2 | Pin B | Signal or power contact B | I/O |
| 3 | GND | Ground | GND |