71-418620-39Z

Overview

The Amphenol Aerospace Operations part number 71-418620-39Z is a circular MIL-spec connector receptacle belonging to the 38999 Aluminum series. It features a size 20 shell with a box mount installation style and straight orientation. The component provides 39 positions utilizing an insertion arrangement designated as 20-39. Contact types are specified without socket contacts, indicating it is designed for pin termination. The end type is crimp, and the housing material is aluminum with an anodic coating finish.

Feature Summary

• Constructed from aluminum alloy housing with an anodic coating for corrosion resistance in harsh environments.
• Designed for box mount panel installation with a straight orientation for direct cabling access.
• Supports high-density interconnect applications through a 39-position configuration within a size 20 shell.
• Utilizes crimp termination methods for secure wire attachment without pre-installed sockets.

Applications

• Commercial aerospace avionics systems requiring MIL-DTL-38999 compliance.
• Aircraft airframe power distribution networks.
• In-flight entertainment and connectivity control units.
• Engine monitoring and instrumentation interfaces.

Procurement Notes

Verify the specific suffix codes against the manufacturer's current datasheet to ensure compatibility with mating plugs and environmental sealing requirements. Confirm that the absence of socket contacts aligns with your assembly process for crimping pins. Check for any updated RoHS or REACH compliance statements relevant to your region. Ensure the box mount style matches your chassis cutout specifications before finalizing procurement orders.

Selection Notes

Select this component when a high-pin-count circular connector is required for panel-mounted applications. The size 20 shell offers a balance between contact density and physical footprint. The aluminum construction provides necessary shielding and durability for industrial and aerospace use. Ensure mating connectors share the same insertion arrangement and shell size for proper engagement.

Part Context

This part belongs to the Amphenol 38999 Aluminum series, a widely adopted standard for circular connectors in military and aerospace sectors. The series is known for its rugged performance and interchangeability with other manufacturers' products meeting MIL-DTL-38999 specifications. The 71-series prefix typically denotes Amphenol's internal designation for this specific line of high-reliability interconnects.

Replacement Considerations

Cross-reference with MS27504E20C39SD(LC) which shares identical electrical and mechanical parameters. Verify that substitute parts maintain the same MIL-DTL-38999 II certification and anodic coating finish to ensure environmental compatibility.