The JST B02B-WPJES-3 (LF)(SN) is a 2-circuit, single-row header from the WPJ series, designed for board-to-cable/wire interconnect in sealed environments. It carries a 5.00 mm pitch, rated 7 A per circuit at 300 V, and mates with the matching WPJ receptacle housing. The header is shrouded on all four walls, with a latch holder for positive retention, and carries a waterproof ingress protection rating — suited for outdoor or washdown applications where moisture ingress is a concern. The housing is glass-filled PBT rated UL94 V-0, and the operating temperature range is -25°C to 85°C.
Key features and ratings
The 5.00 mm pitch gives enough room for the 300 V creepage without crowding the board — the 7 A per circuit rating is conservative for the contact cross-section, so the limiting factor in a harness is the wire gauge, not the header. Tin plating on both the mating and solder tails keeps the cost down; for a sealed connector that doesn't see frequent reconnection, tin is adequate. The latch holder locks the mated pair against vibration, and the four-wall shroud protects the pins during handling and misalignment.
Mating and termination
This header mates with the WPJ series receptacle housing (crimp terminal required). The through-hole solder tails are 0.130" long, suited for standard PCB thicknesses. The board guide aids alignment during assembly. The mated stack height is 25.3 mm, which sets the z-height budget for the enclosure.
Lifecycle and sourcing
The B02B-WPJES-3 (LF)(SN) is listed as obsolete by JST. No official successor order code is recorded. Buyers should verify the mating half and circuit count before committing.