The B3B-PH-K-S(LF)(SN): This is the JST PH series 3-position single-row header, a through-hole shrouded male pin header designed for board-to-cable/wire applications.
2 A per Contact — Signal-Level Current with a Tin-Plated Interface
The brass contact material carries the current with adequate conductivity for signal-level loads. Mated stacking height is 8 mm, which gives a compact board-to-wire profile for space-constrained enclosures.
Active Production — No Obsolescence Risk for This BOM Line
JST lists this header as Active. The part ships in bulk packaging. ROHS3 compliant.
3 vs 4 Positions — the Circuit-Count Decision in the PH Series
If your harness needs a fourth wire, the 4-position version is a drop-in replacement on the same footprint, adding one extra pin position. The 2-position B2B-PH-K-S(LF)(SN) and 5-position B5B-PH-K-S are also direct pitch-and-family matches.