M55302/56B54

Overview

The M55302/56B54 is a rectangular MIL-Spec connector from the AirBorn W Series, manufactured by Molex. It features 54 positions arranged in two rows with a 2.54 mm pitch. The component utilizes gold-plated copper alloy sockets and crimp termination for 22 AWG wire. Designed for PCB mount installation, it operates within a temperature range of -65 C to +125 C. Key electrical specifications include a 5 A current rating, 100 V voltage rating, and 5 GOhms insulation resistance.

Feature Summary

• Military-grade construction compliant with MIL-DTL-55302 standards
• High-density dual-row configuration for compact circuit integration
• Corrosion-resistant gold plating on copper alloy contacts
• Thermal stability suitable for extreme environmental conditions

Applications

• Aerospace and defense avionics systems
• Military communication equipment interfaces
• Industrial control panel interconnections
• Space exploration hardware modules

Procurement Notes

Verify the specific suffix and revision level against the official Molex/AirBorn datasheet to ensure compatibility with mating connectors. Confirm that the crimp tooling matches the specified 22 AWG wire gauge requirements. Check for RoHS compliance status as indicated in the manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when a high-reliability, military-standard receptacle is required for dense wiring applications. Ensure the mating plug corresponds to the correct series and pin configuration. Validate that the operating environment remains within the specified thermal limits and that the PCB mounting style aligns with the mechanical design constraints.

Part Context

This part belongs to the AirBorn W Series, a line of high-density rectangular connectors designed for demanding environments. AirBorn, now part of Molex, specializes in components for aerospace and defense sectors. The W Series offers various position counts and termination options, providing robust connectivity solutions for critical electronic systems requiring strict adherence to military specifications.

Replacement Considerations

Direct substitutes must match the MIL-DTL-55302 specification, 54-position count, and 2.54 mm pitch. Verify identical contact type (socket) and termination method (crimp). Cross-reference with other manufacturers producing equivalent military-spec connectors only if full dimensional and electrical compatibility is confirmed.