The SM30B-ZPDSS-TF: This is a 30-position, dual-row header from JST's ZPD series, pitched at 1.50 mm and terminated through surface-mount right-angle solder tails. The shrouded 4-wall housing and locking ramp are designed for a board-to-cable/wire connection where vibration or cable tug could otherwise unmate a plain header.
Locking ramp retention — what it means when the cable gets yanked
This is the primary mechanical retention — without it, the mated pair relies only on friction from the contact beams, which is insufficient under cable strain in a 30-wire bundle.
Sourcing and compliance — active but RoHS non-compliant
Verify your regional exemption or compliance path before committing the BOM line.