What this is
The JST B3P-VH-FB-B(LF)(SN) is a 3-circuit single-row male header in the VH series, board-to-cable orientation, with a 0.156 inch (3.96 mm) pitch — larger than the common 3.00 mm pitch family, which matters when you are routing to an existing harness that was built around the VH footprint. The body is fully shrouded on four walls with a locking ramp on the header flange — the shroud keeps the mated housing from cocking under vibration, and the ramp gives an audible click that confirms full engagement. Board guide bosses on the insulator body help pilot the housing during assembly so the terminals seat without bending. Contacts are copper alloy with tin plating on both the mating interface and the solder tail; no gold option appears in this variant. Rated 10 A per circuit at 250 V, which puts it squarely in power-distribution territory for this pitch class — the tin plating is the right choice for durability in a harness environment where the connector may see repeated matings during service.
What the ratings mean
How it compares
The B3P-VH-FB-B (same series, no LF/SN suffix) is electrically and mechanically identical — same 3 positions, same pitch, same tin plating, same current and voltage ratings. The suffix codes on this listing describe lead-frame plating and tin-lead composition for the solder tails, which affects reflow profile and shelf life, not the connector's fit or current capacity. The B2P-VH-FB-B carries the same specs in a 2-circuit count — match the position count to the actual circuit count on the harness side rather than assuming a larger header is interchangeable.