The TE Connectivity AMPLIMITE HD-20 747846-3 is a 25-position D-sub receptacle with female sockets, laid out in the standard DB25 shell size (3, DB, B). The 6 A per contact rating and 125 V voltage rating are typical for signal-level D-sub applications: RS-232 serial ports, parallel printer cables, instrumentation interfaces, and industrial control harnesses.
Board Lock and Ground Strap — Why They Matter
This receptacle includes a board lock and a ground strap. If your assembly sees vibration or the cable gets dressed tight, these features save you from cracked solder joints or intermittent shield bonds.
Mounting Hardware — What Comes With It
The flange is threaded for 4-40 jackscrews (housing/shell style). The jackscrews are not included with the receptacle — you order them separately or pull them from your hardware kit. The 0.318-inch (8.08 mm) backset spacing means the front of the connector sits that far from the PCB edge, which is standard for right-angle D-subs and leaves room for the jackscrew nuts and a backshell if you use one.
RoHS and Compliance — One Constraint to Know
The 747846-3 is RoHS non-compliant. That is a sourcing constraint if your BOM requires lead-free assembly — check your project's environmental requirements before committing.