The JST SMP-04V-BC is a 4-position plug housing from the SM series, designed as the female half of a wire-to-wire or wire-to-board interconnect system. Typical uses include appliance wiring, automotive interior harnesses, and industrial control panels where a compact, keyed interconnect is needed.
What You Need to Order Alongside It
The housing ships without contacts — the listing explicitly notes Contacts Not Included. You will need to order the matching female crimp terminals separately.
Mating and Polarization
The SMP-04V-BC mates with the corresponding SM series pin header (male side). The housing is polarized by the shape of the mating face and the locking ramp position — it cannot be inserted backwards. The locking ramp engages with a matching ramp on the header, providing vibration-resistant retention that prevents accidental disconnection in service.