Board Fit and Retention for Harness Builders
The 0039306107: This 10-position header from the Mini-Fit Jr 5566 series uses a 4.20mm pitch — the same spacing as the receptacle, so the board footprint matches the mating half directly. The 0.165" row spacing mirrors the pitch, keeping the two rows aligned for a clean press-fit into the housing. In a panel where the harness is routed tight to the board edge, that board lock keeps the header from lifting off the pads when the cable gets snagged.
If the connector sees quarterly disconnect in a field-service application, the tin surface will wear to copper after roughly 25–50 cycles, depending on insertion force. For a one-time mate-and-forget assembly, tin is the cost-effective choice. The 100.0µinch thickness on the post means the solder joint wets reliably through the tin layer during wave soldering — no extra flux step needed for a clean fillet.
Mating with the Receptacle 39-01-2105
This header mates directly with the Mini-Fit Jr receptacle housing 39-01-2105 (10 circuits, 2 rows). The 4-wall shroud on the header aligns the pins before the contacts touch, so the terminals don't bend on insertion.