The 54122-104500800LF from Amphenol Communications Solutions is unshrouded header (board to board) with 50 position, 2 rows, 0.100" (2.54mm) pitch and solder termination. This through hole mounting header has 0.120" (3.050mm) tail length, 0.225" (5.715mm) post (mating) length and 0.660" (16.764mm) overall pin length. The 54122-104500800LF has phosphor bronze contacts with 30.0µin (0.76µm) gold plating and black high temperature thermoplastic housing. Operating temperature range is from -65°C to 125°C.