D Sub Backshells

D-sub backshells are essential components designed to provide mechanical support and electromagnetic interference (EMI) or radio frequency interference (RFI) protection for D-subminiature connectors. By shielding connections and securing cables, they enhance the performance and longevity of the overall connector system. D-sub connector backshells are widely used in data, signal, and power transmission applications across various industries.

How Do D-Sub Backshells Work?

A D-sub backshell attaches to the rear of a D-sub connector, enclosing the cable termination area. This enclosure serves two primary functions: Protecting the termination from mechanical strain and shielding it from external electrical interference. Most backshells include a strain relief clamp that grips the cable, reducing stress on the conductor-to-connector interface. Many options, such as low-profile D-sub backshells and right-angle backshells, are tailored for space-constrained applications or unique cable orientations.

D-Sub Backshell Types

D-sub backshells are available in several formats to meet the specific needs of different D-sub connector configurations, cable types, and environments.

Backshell D-Sub

This term generally refers to standard D-sub backshells that attach to D-sub connectors to provide strain relief and EMI/RFI shielding. They come in various materials, including metal and plastic, and can accommodate different cable diameters.

D-Subminiature Connector

These backshells are compatible with D-subminiature connectors and are commonly used in computing, communication, and industrial equipment. Options include 9-pin, 15-pin, and 25-pin configurations.

High-Density D-Sub

High-density backshells support connectors with more pins in the same footprint as standard D-subs. These are ideal for applications requiring multiple signal paths in limited space.

Standard

Standard backshells are used with typical D-sub connectors and provide dependable protection and strain relief. They are often available in both metal and plastic versions, depending on shielding needs.

Standard D-Sub

Similar to the above, these backshells are tailored for standard-size D-sub connectors, offering basic mechanical support and shielding functions.

Sub-Miniature

Micro D-sub backshells, also known as sub-miniature backshells, are used in compact connectors where space and weight constraints are critical, such as aerospace or medical devices.

Waterproof D-Sub

These specialised backshells are designed with sealing features to provide ingress protection (IP-rated), making them suitable for outdoor or industrial applications exposed to moisture or dust.

What are D-Sub Connector Backshells used for?

D-sub connector backshells are used to:

Provide EMI and RFI shielding for signal integrity
Offer strain relief to protect connector-to-cable junctions
Support cable management and routing
Prevent mechanical damage and maintain long-term reliability
Facilitate proper alignment and secure fitting of connectors

In environments with dense cabling or frequent movement, D-sub backshells reduce the risk of connection failure, cable fatigue, or data errors.

Industrial Application of D Sub Backshell

D-sub backshells are widely used in:

Industrial automation: For sensors, controllers, and robotic interfaces
Telecommunications: In network cabinets and switchgear
Military and aerospace: Where micro D sub backshells ensure reliable connections under vibration
Medical equipment: In diagnostic and imaging devices
Automotive systems: Particularly in ECU diagnostics and infotainment interfaces

How to Install D-Sub Backshells

The general installation process involves:

Prepare the cable: Strip the cable ends and organise the wires as required
Attach connector: Solder or crimp the wires to the D-sub connector pins
Secure the backshell: Slide or snap the backshell over the connector, aligning any locking tabs
Tighten strain relief: Fasten the cable clamp to prevent strain on internal contacts
Test assembly: Verify secure fit and signal continuity

Some variants, such as the 90-degree D-sub backshell, may have angled exits and specific alignment notches to accommodate directional routing.

Trusted D-Sub Backshell Manufacturer, Supplier and Distributor in Australia

RS Australia is a trusted and leading manufacturer, supplier, and distributor of D-sub backshells. We carry a wide selection of options including AMP D Sub backshells, micro and waterproof backshells to suit various applications and environments. Our products are sourced from industry-leading brands like Amphenol Communications Solutions and NorComp, and we also offer our own RS PRO range for those seeking quality and value.

Buy D-Sub Backshell Online from RS Australia

Looking to buy a D-sub backshell online in Australia? RS Australia offers a seamless online shopping experience with a wide variety of high-quality D-sub connector backshells to suit your needs.

With easy navigation and technical datasheets, finding the right component is simple. Plus, we offer fast and reliable delivery across the country, including express and next-day options. For full details on delivery fees and timelines, visit our Delivery Information page.