188275-4 - 

Micro-MaTch Miniature Connectors - Female On-Board SMD Sockets
Micro-MaTch SMD female on-board SMD connectors with a 1.27mm centerline and red PA 4.6 polarized housings. These Micro-MaTch SMD female connectors have phosphor bronze contacts with a tin over nickel finish plating, the contacts also have an additional spring to cater for thermal expansion between the housing and the PCB thus reducing the tension on the solder joints. These Micro-MaTch SMD female on-board SMD connectors are also available with locking latches (see part numbers x-338069-x).