M55302/55-A20H

Overview

The M55302/55-A20H is a rectangular MIL Spec connector from the AirBorn W-Series, manufactured by Molex. It features a 20-position, 2-row configuration with a 2.54 mm pitch. The receptacle utilizes solder cup termination for PCB mounting and contains gold-plated copper alloy sockets. Constructed with a Polyphenylene Sulfide (PPS) housing, it operates between -65°C and +125°C. Electrical specifications include a 5 A current rating, 5 GOhms insulation resistance, and compliance with MIL-DTL-55302 standards.

Feature Summary

• Military-grade construction compliant with MIL-DTL-55302 specifications
• Gold-plated contacts ensure reliable signal transmission in harsh environments
• Polyphenylene Sulfide housing provides high thermal stability and chemical resistance

Applications

• Avionics systems requiring rugged interconnects
• Military communication equipment
• Defense electronics assemblies

Procurement Notes

Verify the specific suffix against official Molex/AirBorn documentation to confirm exact pinout and mating compatibility. Ensure the procurement source is an authorized distributor to guarantee authenticity. Confirm RoHS status and environmental certifications match project requirements before finalizing orders.

Selection Notes

Select this component when a 20-position, 2-row MIL-Spec receptacle is required. Verify that the 2.54 mm pitch and solder cup termination align with the PCB layout. Ensure the operating temperature range of -65°C to +125°C meets the application's environmental demands.

Part Context

This part belongs to the AirBorn W-Series, designed for high-density interconnects in demanding applications. The series is known for its push-pull coupling mechanism and robust performance in aerospace and defense sectors. Molex now manufactures these components following the acquisition of AirBorn.

Replacement Considerations

Compatible substitutes include other MIL-DTL-55302 Class K connectors with identical 20-position, 2-row configurations. Verify that alternative parts maintain the same 2.54 mm pitch, solder cup termination, and gold plating specifications.