What This Ferrule Does in the Cable Assembly
The TE 3-747579-6 is a straight, shielded outer ferrule for AMPLIMITE HD-20, HDE-20, HDP-20, and HDP-22 D-subminiature connectors. It slides over the cable jacket and the backshell, then the shield braid or foil is dressed over it before the backshell is crimped or clamped down — that's how the cable shield is terminated to the connector shell. The ferrule itself is the metal sleeve that bridges the cable braid to the D-sub backshell, giving you a continuous 360° shield path from the cable to the mated connector pair. One ferrule covers DB9, DB15, and DB25 shell sizes — the 9 ~ 25 position range means it fits the three standard shell sizes in the AMPLIMITE family. If you're building a harness that mixes shell sizes, this single part number simplifies the BOM.
Sourcing and Lifecycle — Still in Production
No end-of-life notice on record.
Compatibility Check — Which Connectors It Fits
This ferrule is designed for use with AMPLIMITE Series HD-20, HDE-20, HDP-20, and HDP-22 D-sub connectors. It works with any standard DB9, DB15, or DB25 shell in those series. The shielded feature means it's intended for cable assemblies that need EMI/RFI control — not for unshielded backshells.