Power Blade Receptacle for Backplane and Power Distribution
The Molex Impact 78216-1001 is a 4-position, 2-row power blade receptacle from the Impact 78216 series, designed to deliver 25 A per circuit at 250 V through female blade sockets. It is a press-fit, through-hole component intended for solderless backplane assembly, where the compliant pin presses into a plated through-hole for a gas-tight, high-reliability interconnect.
What the 25 A Rating Means for Your Board
25 A per circuit is bus-level current — each blade socket carries the main DC rail, not a signal line. The 2-column, 2-row layout keeps the power path short and the voltage drop low, but the board trace feeding each blade must be sized for the full 25 A, and the press-fit hole pattern needs a clean plated barrel to seat the compliant pin without damaging the via. The 250 V rating gives enough creepage for the 4 mm pitch typical of this blade format, so the board layout doesn't need excessive keep-out around the footprint.
Press-Fit Termination: Solderless Assembly
Press-fit termination means the connector is pressed into the board without solder — the compliant pin deforms elastically inside the plated through-hole, creating a gas-tight joint. This is standard for backplane applications where rework, high pin-count, or thermal cycling makes soldering impractical.