9-Position D-Sub with Press-Fit Termination — No Solder Required
The TE Connectivity AMPLIMITE HD-20 5747091-2 is a 9-position D-Sub receptacle with female sockets arranged in two rows. This makes it a natural fit for backplane assemblies or any board where solderless assembly, rework-friendliness, and high-reliability interconnects are priorities. The shell size is DE-9 (E layout), the standard footprint for 9-position D-Subs, so the board layout matches any other DE-9 connector. The shell itself is steel with tin plating, providing EMI shielding and mechanical robustness. The press-fit termination also avoids the thermal stress of soldering on the housing material.
Press-Fit vs Solder-Tail — Why the Termination Matters
The 5747091-2 uses press-fit contacts, not solder tails. This means the connector is pressed into the PCB using a pneumatic or hydraulic press, and the compliant pin section deforms to create a gas-tight connection with the plated through-hole. The advantage: no solder voids, no flux residue, and the connector can be removed and replaced without desoldering — a real benefit in backplane or high-reliability assemblies where rework is expected. The trade-off is that the PCB hole size and plating thickness must match the press-fit pin specification; standard solder-tail footprints may not work.