The DF57H-4P-1.2V(21) from Hirose is surface mount header with male blade and solder termination. This board to cable/wire header has 4 positions, 1 row and 0.047" (1.20mm) pitch. The DF57H-4P-1.2V(21) is made of liquid crystal polymer (LCP) insulator and brass contacts with tin finish. Operating temperature range is from -35°C to 85°C.