The TE Connectivity 5747144-2 is a 50-position AMPLIMITE HD-20 D-Sub receptacle with female sockets arranged in three rows. The shell size is 5 (DD), the standard layout for 50-pin high-density D-subs. The press-fit termination means the contacts are pressed into plated through-holes — no solder wicking, no reflow profile to manage. That makes this part a fit for backplane assemblies or any build where solderless assembly and field rework are priorities.
Press-Fit Termination — The Assembly Implication
Press-fit contacts avoid the thermal cycle of wave or reflow solder. The PCB hole diameter must match the press-fit zone of the compliant pin — a standard plated through-hole for a 0.040-inch square post is typical, but the exact finished hole size lives in the TE application drawing. The press-fit joint is gas-tight and passes the same reliability tests as solder, with the advantage that a damaged contact can be staked out and replaced without desoldering.
Mating Half and Field Fit
The flange features 4-40 threaded inserts for the jackscrew lock — the same UNC 4-40 thread used across the HD-20 family. The mating plug must also be press-fit or solder-cup terminated; the shell interface is independent of the termination style. Gold-on-copper-alloy contacts on both halves handle repeated mate-unmate cycles without fretting corrosion.
Temperature Range and Flammability
The steel shell is tin-plated for corrosion resistance and EMI shielding continuity when the mating plug's shell contacts the ground indents.