71-528266-28P

Overview

The Amphenol Aerospace Operations 71-528266-28P is a circular MIL-spec connector receptacle belonging to the MIL-DTL-38999 Series III family. It features an aluminum shell with size 18 and utilizes a crimp termination method for its contacts. The component provides 28 positions configured with male pins, which are gold-plated and constructed from copper alloy. Designed for panel mount installation, this straight receptacle operates within a temperature range of -55°C to +200°C. It supports a voltage rating of 1000 VAC and carries a current rating of 7.5 A per contact.

Feature Summary

• Constructed with a durable aluminum alloy housing for structural integrity in harsh environments.
• Features gold-plated copper alloy contacts to ensure reliable signal transmission and low contact resistance.
• Designed with a bayonet coupling mechanism for rapid and secure mating cycles.
• Engineered to meet stringent MIL-DTL-38999 environmental sealing standards.

Applications

• Avionics systems in military and commercial aircraft
• Radar and communication equipment installations
• Industrial control panels requiring high reliability
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix codes against the manufacturer's latest datasheet to confirm exact plating thickness and environmental seal ratings. Ensure that the mating plug corresponds to the correct shell size and contact arrangement. Confirm compliance with relevant export control regulations if applicable to your region. Request certified material test reports for critical aerospace or defense applications.

Selection Notes

Select this component when a high-density 28-position circular connector is required for panel-mounted applications. The Series III form factor allows for increased contact density compared to earlier generations. Ensure the mating environment accommodates the specified operating temperature range up to 200°C. Verify that the crimp tooling matches the specific contact sizes defined in the assembly instructions.

Part Context

This part belongs to the extensive MIL-DTL-38999 connector family produced by Amphenol Aerospace. These connectors are widely recognized for their ruggedness and interchangeability across manufacturers. The Series III designation indicates a compact design optimized for weight reduction while maintaining performance. This specific model represents a standard configuration within the industrial and aerospace interconnect portfolio.

Replacement Considerations

Compatible substitutes include equivalent MIL-DTL-38999 Series III receptacles from other qualified manufacturers such as LEMO or ITT Cannon, provided they match the shell size, contact arrangement, and mounting style. Verify dimensional compatibility and electrical ratings before substitution.

FAQ

What is the maximum operating temperature for this connector?

The 71-528266-28P is rated for an operating temperature range of -55°C to +200°C.

Does this receptacle include an environmental seal?

Yes, this MIL-DTL-38999 Series III receptacle is designed to provide environmental sealing when mated with a compatible plug.

What type of coupling mechanism does it use?

It utilizes a bayonet coupling nut for quick connection and disconnection.