9-Position Shielded Backshell for Standard DB9 Connectors
The TE AMPLIMITE 5-1393738-9 is a two-piece shielded backshell designed for 9-position D-sub connectors, commonly known as DB9. It accepts round cable and routes it at a 37.5° angle from the connector axis — a practical angle for keeping the cable run low against the panel or enclosure wall. The backshell includes the assembly hardware (typically jack screws) and a cable clamp, so you don't need to order those separately. The nickel over copper plating on the shell provides the shield path from the D-sub connector's metal shell to the cable braid, which is critical for maintaining signal integrity in electrically noisy environments like industrial control cabinets or data communication equipment.
Shell Size and Connector Compatibility
This backshell is specified for shell size E, which is the standard shell size for 9-position D-sub connectors. It also lists compatibility with HD15 (high-density 15-position) connectors, meaning the same backshell can serve two shell sizes — useful if your harness build mixes standard DB9 and high-density DB15 connectors. The 37.5° cable exit angle is a middle ground between straight and 90°; it clears the panel edge while keeping the cable entry close to the connector body, reducing the overall footprint inside the enclosure.
Comparison with 7-1437064-0 and 828277-6
Both 7-1437064-0 and 828277-6 are also AMPLIMITE series backshells with the same 9-position, shielded, 37.5° cable exit design. The only difference is packaging: 5-1393738-9 ships in a box, 7-1437064-0 ships in a tube, and 828277-6 ships in a bag. For a harness shop that prefers bulk box delivery for easy kitting, the box is the natural pick. If your assembly line uses tube-fed automated equipment, the tube packaging of 7-1437064-0 may be more convenient. All three are active and functionally interchangeable for the DB9 application.