Active 3-Position SMT Header with 1.00 mm Pitch
JST BM03B-SRSS-TBT(LF)(SN) is a 3-position, single-row, shrouded header from the SH/SR series. It mates with the corresponding SH/SR crimp receptacle for a board-to-wire connection. Tin is a good fit for low-cycle, cost-sensitive applications — expect a few hundred mating cycles before contact resistance drifts. The 4.9 mm mated stack height is the z-height from the PCB top to the mating receptacle face — plan your enclosure clearance accordingly.
RoHS compliant. No official second-source cross-reference from JST; the closest functional equivalent is the BM03B-SRSS-TB (same pinout, same pitch, same current rating, same 4.9 mm stack height) but without the pick-and-place feature tape.