71-528265-55Y

Overview

The Amphenol Aerospace 71-528265-55Y is a circular MIL-spec connector receptacle belonging to the MIL-DTL-83723 Series III family. It features a size 22 shell with a wall mount installation style and bayonet coupling mechanism. The component contains 55 positions utilizing socket contacts designed for crimp termination. Constructed from aluminum alloy, the housing is finished with electroless nickel plating to ensure environmental durability. This straight-mount receptacle is rated for 7.5 A current and complies with EREL qualification standards.

Feature Summary

• Bayonet coupling system provides rapid engagement and secure locking
• Wall mount receptacle design facilitates direct panel integration
• Aluminum housing with electroless nickel plating ensures corrosion resistance

Applications

• Military ground vehicle electrical systems
• Naval shipboard communication equipment
• Avionics interconnects in jet aircraft and helicopters

Procurement Notes

Verify the specific suffix 'Y' against the manufacturer datasheet to confirm material or coating variations. Ensure compatibility with mating plugs of the same MIL-DTL-83723 Series III standard. Confirm that the 55-position socket arrangement matches the required circuit density. Validate that the wall mount orientation aligns with the chassis design constraints.

Selection Notes

Select this part when a high-density 55-position connection is required in a ruggedized environment. The size 22 shell offers a balance between contact count and physical footprint. The bayonet lock is preferred over threaded options for faster maintenance cycles. Verify that the crimp termination method suits the available wire gauge and tooling infrastructure.

Part Context

This component is part of the extensive Amphenol Aerospace MIL-DTL-83723 portfolio, which serves as a standard for circular connectors in defense applications. The Series III designation indicates a lightweight aluminum construction compared to earlier steel versions. The 71- prefix typically denotes a specific manufacturer code within the broader military specification framework.

Replacement Considerations

Compatible substitutes include MS3471W22-55SY and other equivalents listed under MIL-DTL-83723 Series III. Cross-reference the pinout arrangement and shell size to ensure mechanical interchangeability. Verify that the replacement maintains the same 7.5 A current rating and bayonet coupling style.