What this is
The JST B12P-XL-HDS is the 12-circuit member of the XL series, a 5.00 mm pitch board-to-cable header with a square male pin contact, 2-row layout, and through-hole solder termination. Four-wall shrouding and a locking ramp secure the mating half against vibration — a meaningful upgrade over single-wall or unshrouded headers in industrial harness environments.
Ratings that drive the fit
Contact material is brass with tin plating on both the mating face and the solder tail; the tin finish suits signal or low-power distribution rather than repeated high-cycle reconnection. Rated 10 A per circuit at the listed temperature envelope of -25 °C to 90 °C. Voltage rating is 150 V — verify the system rail voltage against this rating before committing the BOM line. Insulation is polyamide (PA66, Nylon 6/6), white, with a 0.575-inch (14.60 mm) standoff height and UL94 V-0 flammability rating — suitable for industrial enclosure interiors where flame retardancy is specified.