JST VH Series Header — B7P-VH-FB-B(LF)(SN)
The JST B7P-VH-FB-B(LF)(SN) is a 7-position, single-row header in the VH series, designed for board-to-cable/wire interconnects. It carries a 3.96 mm pitch, which sets the board footprint spacing for the through-hole solder tails. The header is fully shrouded on all four walls, protecting the male pins during handling and mating. Rated 10 A per circuit at 250 V, this header handles power-level current — think DC supply rails, motor drive lines, or heater circuits inside an industrial cabinet. The tin-on-tin contact system (mating and post finish both tin) is cost-effective for moderate mating-cycle applications where gold's corrosion resistance is not required. The locking ramp on the shroud provides positive retention with the mating VH receptacle housing — an audible click confirms full engagement, which matters in vibration-prone environments like panel wiring or conveyor systems. The glass-filled PBT housing carries a UL94 V-0 flammability rating, so the connector is acceptable inside equipment enclosures that require a flame-retardant plastic.
Fit and Footprint
The 3.96 mm pitch is the critical board-layout dimension — it matches the standard 0.156-inch grid common in power connectors, so the PCB hole pattern is straightforward. The through-hole solder tails are 3.70 mm long, which gives enough standoff for a clean solder fillet on a standard 1.6 mm board. The board guide feature helps align the header during wave-solder assembly, reducing skew. With 7 positions loaded in a single row, the header occupies about 27.7 mm of board edge. The 11.00 mm insulation height above the board means the mating receptacle sits well clear of nearby components — useful when routing wires over a crowded PCB.
Mating and Termination
This header mates with JST VH series receptacle housings that accept crimp terminals for 18-22 AWG wire. The locking ramp on the shroud engages a matching latch on the receptacle — it locks positively and releases by lifting the ramp tab. The 4-wall shrouding prevents the receptacle from being misaligned or reversed during mating, which is a common failure point on unshrouded headers. Termination is through-hole solder to the PCB. The square male pins (0.045-inch typical for VH series) provide a robust contact beam for the receptacle's female terminal. The tin plating on both mating and post surfaces is rated for the full 10 A current without galling concerns at typical mating frequencies.