The DF13C-4P-1.25V(51) from Hirose is straight male pin header with 4 positions, 1 row and 0.049" (1.25mm) pitch. This is board to cable/wire header with solder termination. The DF13C-4P-1.25V(51) has beige polyamide insulator and gold plated brass contacts. Operating temperature range is from -35°C to 85°C.