71-432653-21P

Overview

The Amphenol Aerospace Operations part number 71-432653-21P is a circular MIL-spec connector plug designed for cable mounting. It features an in-line configuration with shell size 23 and utilizes a crimp termination method for secure wire attachment. The component contains 21 positions, each equipped with male pin contacts. These contacts are constructed from copper alloy and feature gold plating to ensure reliable signal transmission. The unit belongs to the MIL-DTL-38999 series, adhering to stringent military standards for performance and durability in demanding environments.

Feature Summary

• Constructed as a cable-mount plug with an in-line orientation for direct connection applications
• Features 21 male pin contacts made of copper alloy with gold plating for conductivity
• Utilizes a crimp termination style to ensure robust mechanical and electrical connections
• Complies with MIL-DTL-38999 specifications for high-reliability circular connector systems

Applications

• Military and defense electronic systems requiring MIL-DTL-38999 compliance
• Aerospace avionics and communication equipment interfaces
• Industrial control systems operating in harsh environmental conditions

Procurement Notes

Verify that the specific ordering suffix matches the required contact arrangement and shell finish. Confirm that the crimp tooling used during assembly is compatible with the specified contact sizes. Ensure that the receiving inspection includes continuity testing and visual checks for terminal integrity. Cross-reference the manufacturer datasheet for any recent design changes or obsolescence notices before finalizing procurement orders.

Selection Notes

Select this component when a 21-position male plug is required for MIL-DTL-38999 Series III applications. The gold-plated copper alloy contacts offer superior corrosion resistance compared to silver-plated alternatives. The crimp termination allows for field repairability and reduces stress on the wire insulation. Consider the shell size 23 dimensions to ensure adequate space within the equipment enclosure for mating and cabling.

Part Context

This connector is part of the broader Amphenol Aerospace circular connector portfolio, which serves critical infrastructure sectors. The 71-432653-21P variant specifically addresses the need for high-density interconnects in compact spaces. Its design supports both shielded and unshielded cable configurations depending on the mating receptacle. The product line emphasizes long-term reliability under vibration and thermal cycling.

Replacement Considerations

• 71-432653-21P

FAQ

What is the contact material and plating for this plug?

The contacts are made of copper alloy and are gold plated to provide excellent conductivity and corrosion resistance.

Does this connector support solder termination?

No, this specific model uses a crimp termination style for attaching wires to the contacts.