The JST B4B-PH-KL (LF)(SN) is a PH series, 4 way, single row, 2. 0 mm pitch, top entry type, low insertion force through hole shrouded header. It is designed to meet the demand for high density connection of internal wires to printed circuit boards.Reliable contactFully shrouded headerPrinted circuit board retention mechanismSurface mount model (SMT)Compact, highly reliable & low in cost