71-419749-18S

Overview

The Amphenol Aerospace Operations part number 71-419749-18S is a circular MIL-spec connector plug. It belongs to the PT series, designed for high-reliability interconnection in demanding environments. The component features a bayonet coupling mechanism and is constructed with an aluminum alloy shell. It utilizes crimp termination for secure wire attachment and includes gold-plated contacts made from copper alloy to ensure low contact resistance and corrosion resistance. This straight-mount plug is rated for operation within a temperature range of -55°C to +125°C.

Feature Summary

• Bayonet coupling style provides rapid connection and secure locking.
• Crimp termination ensures reliable electrical connections for field wiring.
• Gold-plated copper alloy contacts offer superior conductivity and durability.
• Aluminum shell construction provides lightweight structural integrity.

Applications

• Aerospace avionics systems
• Military communication equipment
• Industrial instrumentation panels
• Radar and navigation subsystems

Procurement Notes

Verify the specific contact arrangement and shell size against the design drawing before procurement. Confirm that the mating connector utilizes a compatible bayonet interface. Ensure the cable diameter matches the strain relief requirements for proper installation. Check for any specific environmental sealing needs if operating in harsh conditions.

Selection Notes

Select this model when a straight-mount plug with a bayonet lock is required. Ensure the circuit count matches the application's pin configuration. Verify that the crimp tooling is compatible with the specified contact sizes. Consider the operating temperature range and environmental exposure during system design.

Part Context

This component is part of the PT series of miniature cylindrical connectors. These connectors are widely used in military and aerospace applications due to their robust performance. The series offers various shell sizes and contact arrangements to meet diverse interconnection needs.

Replacement Considerations

Cross-reference with MS3122E22-18S or similar MIL-DTL-26482 Series I equivalents. Ensure mechanical dimensions and electrical ratings match exactly. Verify compatibility with existing mating receptacles and mounting hardware.