71-418620-35Y

Overview

The Amphenol Aerospace Operations part number 71-418620-35Y is a circular MIL-spec connector receptacle belonging to the 38999 Aluminum series. It features an aluminum shell with nickel plating and utilizes a bayonet coupling style for secure attachment. The component is designed for wall mount installation in a straight orientation. It supports a high-density configuration with 128 positions, employing male pin contacts that are gold-plated for reliable signal transmission. The termination method specified is crimp, ensuring robust mechanical and electrical connections within the assembly.

Feature Summary

• Constructed from aluminum alloy housing with protective nickel plating for durability
• Utilizes bayonet coupling mechanism for rapid and secure mating cycles
• Supports high-density interconnect requirements through 128-position capacity
• Designed for wall mount panel installation with straight cable exit

Applications

• Commercial aerospace avionics systems
• Military aircraft power distribution networks
• Radar and instrumentation control panels
• Harsh environment electronic enclosures

Procurement Notes

Verify the specific contact arrangement and shell size against the official datasheet before procurement. Confirm that the gold-plated pin contacts meet the required current carrying capacity for the intended circuit. Ensure compatibility with the mating plug's bayonet interface and wall mount hole pattern. Check for any updated environmental compliance certifications required by the end application.

Selection Notes

Select this component when high pin count density is required in a compact circular form factor. The nickel-plated aluminum shell offers a balance of weight reduction and corrosion resistance suitable for indoor or protected outdoor environments. The crimp termination allows for field assembly flexibility compared to solder options. Consider the bayonet lock requirement for vibration-prone applications where quick release is not needed.

Part Context

This part belongs to the extensive 38999 Series III family of circular connectors, widely adopted in defense and aerospace sectors. The 38999 Aluminum series specifically denotes the use of lightweight aluminum shells, contrasting with stainless steel or cadmium-plated variants. This standardization ensures interchangeability with other manufacturers' components meeting the same MIL-DTL-38999 specifications.

Replacement Considerations

Cross-reference with MS27466P25F35PD as it shares identical physical dimensions, position count, and mounting style within the same manufacturer's lineup. Verify that the replacement part maintains the same bayonet coupling and wall mount configuration to ensure direct fitment without enclosure modifications.