71-418618-66X

Overview

The Amphenol Aerospace Operations part number 71-418618-66X is a circular MIL-spec connector plug belonging to the 38999 Aluminum series. It features an aluminum shell with a straight cable mount style and threaded mating engagement. The component utilizes crimp termination for copper contacts, which are gold plated. This specific configuration provides 66 positions using size 22 contact arrangements. It is rated for 600 VAC and 850 VDC operation with current ratings of 7.5 A and 13 A depending on the specific contact size.

Feature Summary

• Constructed with an aluminum alloy shell for durability in harsh environments
• Utilizes gold-plated copper contacts for reliable signal transmission
• Features a straight cable mount design with threaded coupling

Applications

• Aircraft avionics systems
• Airframe power distribution
• In-flight entertainment connectivity

Procurement Notes

Verify the exact datasheet version for the 71-418618-66X designation, as it corresponds to the JT06RE-18-66SC(301) family. Confirm that the supplier documentation explicitly lists this alphanumeric code as the primary manufacturer part number rather than a distributor-specific alias. Ensure the ordering suffix matches the required contact plating and shell finish specifications before finalizing procurement orders.

Selection Notes

Select this component when a high-density 66-position circular connector is required for aerospace applications. The aluminum housing offers weight advantages over steel alternatives while maintaining structural integrity. Verify that the system environment supports the operating voltage limits and that the crimp termination method aligns with available assembly tooling and wire gauge requirements for the selected contact sizes.

Part Context

This part belongs to the Amphenol 38999 series of circular connectors, which are widely used in military and commercial aerospace sectors. The series is known for its compact size and high contact density. The 71-418618-66X designation specifically identifies a plug variant within the aluminum shell sub-family, designed for rugged performance in demanding operational conditions.

Replacement Considerations

The part number 71-418618-66X is functionally equivalent to the MS3126E18-66S and JT06RE-18-66SC(301). Cross-referencing should confirm identical pinout arrangements and mechanical dimensions. Verify that any substitute maintains the same MIL-DTL-38999 compliance level and environmental sealing characteristics.