The TE Connectivity 5745171-1 is a two-piece metal backshell from the AMPLIMITE series, designed to fit standard 9-position D-sub connectors (shell size E) and also compatible with high-density 15-position D-subs. It provides 360° EMI/RFI shielding through its zinc alloy construction with nickel over copper plating, and includes the 4-40 mating screws and strain relief hardware needed to secure the cable and complete the assembly.
Position Count and Shell Compatibility
Rated for 9 positions and shell size E, this backshell covers the standard DE-9 footprint. The spec also lists compatibility with HD-15 (high-density 15-position) connectors, meaning a single 5745171-1 can serve both a legacy RS-232 port and a VGA monitor cable, reducing the number of backshell SKUs on the BOM.
Shielding and Plating
The zinc alloy body is plated with nickel over copper, providing a conductive surface that, when mated to a D-sub with metal shell, creates a continuous shield around the cable termination. This is the standard approach for keeping radiated emissions below Class B limits in commercial equipment and for protecting sensitive signal lines from external interference.
Included Hardware and Strain Relief
The backshell ships with the assembly hardware (4-40 mating screws) and a strain relief clamp. The 4-40 screws are the standard thread for D-sub connectors; the strain relief grips the round cable jacket to prevent pull-out forces from reaching the solder or crimp terminations inside the connector.