SMT shrouded header, 1.00 mm pitch
The BM09B-SRSS-TB(LF)(SN) is the 9-circuit member of JST's SH/SR header line, a board-to-cable/wire interconnect with a 1.00 mm pitch and a single row of tin-plated male pins. Rated 1 A per contact at 50 V, it mounts via surface-mount solder termination and includes a shrouded 4-wall housing with solder retention features to hold the part in place during reflow.
What the specs mean for the board layout
The 1.00 mm pitch drives a compact board footprint — the single-row layout keeps the connector width to the insulation body's 0.167" (4.25 mm) height, leaving room for trace routing under the part. The push-pull fastening type and tin-plated mating contacts suit low-cycle, low-current signal duty; the UL94 V-0 nylon housing meets the flammability rating required inside enclosed equipment. Mated stacking height is 4.9 mm — this sets the z-height budget for the cable-to-board interface in a space-constrained assembly.