Board Mounting and Routing Details
The 10127721-042LF: The 0.126 inch (3.20 mm) post length gives enough stand-off for the solder joint to form cleanly on the bottom side, and the 0.433 inch (11.00 mm) insulation height leaves room for the receptacle to fully seat over the shroud. Board guide features on the header help align the part during automated placement, reducing skew on the pick-and-place line.
Mating Connector and Wire Termination
This header mates with the Minitek® Pwr 3.0 receptacle housing (crimp-terminal style) — the 4-wall shroud and locking ramp are designed to engage the receptacle's outer latch, so the pair stays mated under cable strain. The gold flash on both mating and post contacts provides corrosion resistance and low contact resistance for moderate mating cycles — not rated for high-cycle reconnect duty like thicker gold, but sufficient for most field-service and panel interconnect applications.
RoHS compliant.
Comparing the 4-Position to the 8-Position Sibling
The 10127721-082LF is the 8-position sibling in the same series — same 3.00 mm pitch, same dual-row layout, same shrouding and locking ramp. If the BOM calls for 8 circuits, the 10127721-082LF is a direct drop-in on the same footprint pattern — the board layout just extends the row by two more positions per side.