25-Position Right-Angle D-Sub for Board-Edge I/O
The TE Connectivity 5745783-4 is a 25-position D-Sub receptacle from the AMPLIMITE HD-20 series, built for board-edge I/O where a right-angle solder connection saves enclosure depth. It carries 25 female sockets across two rows in the standard DB-25 shell layout — the same footprint that mates with any DB-25 male plug. The steel shell is tin-plated for EMI shielding and corrosion resistance, and the flange carries 4-40 threaded inserts for screw-lock retention to the mating plug.
What the 6A and 125V Ratings Mean for Your Circuit
For signal duty, the current draw per pin is usually in the milliamps, so the 6A headroom is generous. The 125V rating is the working voltage between adjacent contacts. In a clean, dry indoor environment the creepage distance on the layout is sufficient, but if the connector sees condensation or conductive dust, you should keep the applied voltage well below 125V or specify a conformal-coated variant.
Mounting and Termination Notes for the Board Layout
The backset spacing is 0.318" (8.08mm), which is the distance from the PCB surface to the mounting flange face. That dimension determines how far the connector body sits off the board, and it must match the panel cutout and the mating plug's shell length. The 4-40 threaded inserts on the flange take jack-screws from the mating plug, so the board layout needs clearance for the screw heads and a tool to tighten them. The standard footprint is well-documented — the hole pattern and pin spacing are fixed by the D-sub shell size. The steel shell provides a ground path through the flange screws; a ground strap is included to tie the shell to the PCB ground plane.