288-Position DDR4 ULP DIMM Socket – Fit and Function
The 10129206-0010013LF is a 288-position DDR4 DIMM socket from Amphenol ICC (FCI), designed for Ultra Low Profile (ULP) memory modules. The 288-position count is the DDR4 standard, so this socket mates with any JEDEC-compliant DDR4 DIMM — no pinout guesswork. It uses through-hole mounting with board locks and latches. The board locks hold the socket in place during wave soldering, and the latches secure the DIMM against vibration — important in server racks or industrial PCs where the memory sees mechanical shock. The card slot is gapped for 0.055" (1.40mm) thick PCBs, matching standard DDR4 module thickness.
What ULP Means for Your Board Layout
The mounting feature is normal, standard-top orientation — the DIMM inserts vertically, perpendicular to the PCB. This is the typical layout for ATX motherboards and server blades. The socket complies with MO-309, the JEDEC standard for DDR4 DIMM mechanical outlines, so it's a drop-in replacement for other MO-309-compliant sockets.
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