The 91911-31325LF from Amphenol Communications Solutions is surface mount mezzanine connector, header with center strip contacts, 25 position, 2 rows and 0.039" (1.00mm) pitch. This is connector with board guide, solder retention and 0.068" (1.73mm) height above board. The 91911-31325LF has copper alloy contacts with 15.0µin (0.38µm) thick gold finish and natural color liquid crystal polymer (LCP) housing. Operating temperature range is from -55°C to +125°C.