The TE Connectivity 745530-4 is a back cover (cap) for the AMPLIMITE HDE-20 series of D-subminiature connectors. It is designed to slide on over the back shell of a DB37 connector, providing cable strain relief and protecting the termination area from debris and mechanical damage. The 37-position shell size matches the standard DB37 connector body, so the cover fits the full row of contacts without interfering with the mating face.
This cover is specified for use with AMPLIMITE Series HDE-20 products. It fits DB37 connectors — the 37-position shell size is the largest standard D-sub footprint, so the slide-on cap clears all 37 pins and the full backshell. The slide-on design means no separate hardware is needed to attach it; it clips over the connector body after termination.