71-419749-12S

Overview

The Amphenol Aerospace Operations model 71-419749-12S is a circular MIL-spec connector plug designed for high-reliability interconnect applications. It features a size 12 shell with a 12-position arrangement, utilizing socket contacts for female mating interfaces. The component adheres to MIL-DTL-38999 Series III standards, ensuring environmental sealing and robust performance in demanding conditions. Constructed with an aluminum alloy housing, it provides effective electromagnetic interference shielding. The connector supports crimp termination for secure wire attachment and includes self-locking capabilities to maintain connection integrity during vibration. It is rated for operation across a wide temperature range of -65°C to +175°C, suitable for aerospace and defense environments.

Feature Summary

• Self-locking mechanism ensures secure connection retention under mechanical stress
• Environmentally sealed design protects against moisture and contaminants
• Shielded aluminum housing provides electromagnetic interference protection
• Crimp termination style offers reliable electrical contact stability

Applications

• Military avionics systems requiring ruggedized interconnects
• Aerospace control and instrumentation circuits
• Naval shipboard communication equipment
• Defense vehicle electronic architectures

Procurement Notes

Verify the specific shell finish and contact plating options available from authorized distributors, as these may vary by production batch. Confirm that the ordering suffix corresponds exactly to the required insertion arrangement and termination type. Ensure compatibility with mating receptacles regarding thread engagement and coupling nut specifications. Request manufacturer certification documents to validate compliance with current military specifications. Check for any recent obsolescence notices or lifecycle status updates before finalizing procurement orders.

Selection Notes

Select this component when a MIL-DTL-38999 Series III plug is required for shielded, environmentally sealed connections. Ensure the system voltage and current ratings align with the connector's electrical specifications. Verify that the cable diameter matches the strain relief requirements for the chosen termination method. Consider the operating temperature range to confirm suitability for the intended deployment environment. Match the contact size and quantity precisely to the circuit design requirements.

Part Context

This part belongs to the Tri-Start TV series of circular connectors manufactured by Amphenol Aerospace Operations. These connectors are widely used in military and aerospace sectors due to their standardized dimensions and high reliability. The series is known for its quick coupling mechanism and robust construction, making it a standard choice for critical interconnect applications where space and weight are constrained but performance must remain uncompromised.

Replacement Considerations

Cross-reference with other manufacturers' MIL-DTL-38999 Series III equivalents if supply chain constraints exist. Verify dimensional interchangeability and mating interface compatibility before substituting. Ensure that alternative sources meet the same environmental and electrical qualification standards.