The Amphenol FCI 10106813-041112LF is a 40-position member of the MezzoStak series, a self-mating, non-gendered, hermaphroditic board-to-board connector system. Two identical connectors mate directly — no separate plug and receptacle — which simplifies the BOM and halves the line-item count for the interconnect pair. The 0.020" (0.50mm) pitch and dual-row layout pack 40 circuits into a compact footprint suited for dense mezzanine stacking in portable devices, instrumentation, and embedded systems.
Stack Height Options and Board Fit
This connector supports three mated stacking heights: 4mm, 4.5mm, and 5.5mm. The 0.140" (3.55mm) height above board is the unmated profile of one half; the final stack height depends on the pairing. Surface-mount termination keeps the bottom side clear for routing.
The hermaphroditic design means both halves carry the same gold thickness — no plating mismatch at the interface.
Position Count Variants in the MezzoStak Line
The 40-position 10106813-041112LF shares the same 0.50mm pitch, dual-row layout, and 3.55mm height with the 30-position 10106813-031112LF and the 50-position 10106813-051112LF. The footprint is identical in length and width — only the number of populated contact positions changes. If your BOM calls for 30 or 50 circuits, those variants drop in without a board layout change.