240-Position DDR2 DIMM Socket — Fit and Keying
The 10005639-11008LF: This is a 240-position DDR2 SDRAM DIMM socket from Amphenol ICC (FCI), designed for through-hole mounting with a standard top-load orientation. The 240 contacts match the DDR2 module edge connector exactly — the socket is keyed differently from DDR3 or DDR4, so a DDR3 module will not seat. The MO-237 standard ensures the mechanical outline matches industry DDR2 DIMM cards.
This thickness supports repeated insertion and removal cycles typical of DIMM sockets in servers and industrial motherboards — the gold layer resists oxidation and fretting corrosion where the module edge wipes the contact beam. In a production environment where memory modules are swapped during test or field upgrade, the gold finish extends the usable life well beyond a tin-plated alternative.
Board Lock and Latch Retention
The latches on each end snap over the DIMM module ears, holding it in place against vibration and shock — a requirement for equipment that ships assembled or sees rack transport. Without the latches, the module can work loose over time.