The TE Connectivity 5650936-5 is a Eurocard DIN 41612-style plug with male pins, built for the backplane side of a card-cage system. Only 32 of those positions are loaded with contacts, a common practice in Eurocard backplanes where the unloaded positions provide mechanical keying or are left open for future expansion.
What the 32-Loaded Positions Mean for Your Backplane
This plug is a 48-position shell with 32 contacts installed — the R/2 (1/2 R) style. The unloaded positions are simply empty holes in the insulator. That saves cost on a backplane where you only need 32 signals, but the full 48-position housing still mates with a standard 48-way DIN receptacle. For a 32-signal backplane with room to grow, this is the part that fits without changing the footprint.
Through-hole solder termination — the pins go through the PCB and are wave-soldered on the back side. The gold-plated contacts handle the mating cycle count expected in a backplane environment without fretting. Mates with any DIN 41612 Type R receptacle that matches the 0.100" pitch and 3-row layout. The R/2 keying means the unloaded positions are on the outer rows; check your receptacle's contact loading to confirm full pin-to-socket alignment.