SMT header for ZH wire-to-board
The B3B-ZR-SM4-TF is a 3-position, single-row male pin header from JST's ZH series. It uses a 1.50 mm pitch and surface-mount termination, with a shrouded 4-wall design that protects the pins and guides the mating female housing into alignment.
Rated for signal-level current
Board-fit and stack height
The natural (off-white) color is standard for the ZH series.
SMT vs through-hole: same pitch, different stack
The through-hole sibling B3B-ZR has the same 1.50 mm pitch, 3 positions, and 1 A rating, but its mated stack height is 5.6 mm versus 6.4 mm for the SMT version. The through-hole part also lacks the solder retention feature. If your board assembly is wave-solder only, the through-hole version is the direct fit; for reflow, the SM4-TF is the correct choice.