The TE 747275-3 is a 15-position D-sub strain relief accessory from the AMPLIMITE HDF-20 series. It is designed specifically for use with AMPLIMITE Series HDF-20 ribbon cable connectors, clamping the cable exit to prevent pull-out forces from reaching the IDC termination points inside the connector. This is the backshell piece that goes over the cable after termination, securing the wire bundle before the connector is mated in a panel or enclosure.
Position Count and Series Fit
The 15-position count matches the standard DE-15 (DA-15) shell size for D-subminiature connectors. This strain relief is keyed to the HDF-20 ribbon cable connector footprint — it is not a generic D-sub backshell. The HDF-20 series uses a specific IDC termination method for flat ribbon cable, and the strain relief profile matches that cable exit geometry. For a 15-position HDF-20 connector, this is the correct mating half for the cable side.