What this connector is
The Molex B4PS-VH is the 4-position member of the VH series — a single-row, board-to-cable header with a 0.156 inch (3.96 mm) pitch, right-angle through-hole mounting, and a locking ramp that holds the mated half under vibration. All four circuits are loaded. The square male pin is brass with tin plating on both the mating face and the solder tail; the insulator is PA66 nylon rated UL94 V-0.
Ratings that drive the fit
The B4PS-VH handles 10 A per circuit at 250 V — the current rating is set by the brass contact cross-section and the PA66 housing temperature limit of 85 °C. The 0.335 inch (8.51 mm) insulation height and 0.303 inch (7.70 mm) mating length define the engagement envelope; the 0.142 inch (3.60 mm) post length is sized for one-sided PCB termination.
How it compares to the lead-free sibling
The B4P-VH(LF)(SN) shares the same 4-position footprint, pitch, current, voltage, and tin-plated contact finish — the LF designation marks the plating process as lead-free compliant, not a different contact grade. If your board was laid out around B4P-VH(LF)(SN), the B4PS-VH drops in with identical pinout and footprint, provided the application does not require RoHS-compliant plating chemistry. The series also scales in position count: B3PS-VH (3 positions) and B5PS-VH (5 positions) are the immediate same-style siblings at the same pitch and ratings.