903-518J-51P is a 50 Ohm SMB straight jack connector designed for PCB edge mounting on 0.062" thick boards. The connector features a brass body and contact with gold plating, and a natural PTFE insulator for reliable electrical performance. It offers a durability rating of 500 cycles minimum and operates over a temperature range of -65°C to +165°C. The interface conforms to MIL-STD-348 SWG Series specifications. This connector is ideal for RF applications requiring compact, reliable interconnects on printed circuit boards.