What it is and where it sits in the VH series
The JST B10P-VH(LF)(SN) is the 10-circuit single-row member of the VH family — a 0.156 inch (3.96 mm) pitch board-to-cable header with a locking ramp and a one-wall shroud. All 10 positions are loaded with tin-plated brass male pins, through-hole solder tails, rated 10 A per circuit at 250 V.
What the key ratings mean for your BOM
The 10 A per circuit at 250 V serves low-to-medium power board-to-cable connections. The 3.96 mm pitch gives a wider board footprint and more routing space between adjacent headers; the 16.5 mm mated stack height and 9.40 mm insulation height constrain the z-axis in dense panel builds. Contact plating is tin on both the mating face and the solder tail — consistent, no mixed-grade confusion. Tin is the workhorse plating for non-frequent mate cycles; if your application demands hundreds of reconnections the VH series with higher-cycle gold plating is the upgrade path, but for a single permanent harness mate the tin finish is entirely adequate. The brass contact body carries the current; derate above 85 °C per your thermal budget. The one-wall shroud and locking ramp keep the mating receptacle seated under panel vibration — the ramp is a positive-latch feature, not just a locating key. Verify your mating half has the corresponding locking channel; not all VH-style housings are keyed the same depth.
Where the class is used
VH-series headers are used as board-to-wire power interconnects in harness assemblies — you will find them in motor drive units, HVAC control modules, and production-line instrumentation where a locked, through-hole header replaces a flying lead solder joint. The PA66 nylon housing carries a UL94 V-0 flammability rating, which satisfies most enclosed-chassis and industrial-enclosure requirements without a separate fire-sleeve.