M55302/55-A50H

Overview

The M55302/55-A50H is a rectangular MIL-Spec connector from the AirBorn W Series, manufactured by Molex. It is classified as a receptacle with 50 positions arranged in two rows. The component features solder cup termination and PCB mount installation style. Contacts are female sockets made of copper alloy with gold plating. The housing utilizes polyphenylene sulfide (PPS). Electrical specifications include a current rating of 5 A, insulation resistance of 5 GOhms, and a voltage rating of 100 V. The operating temperature range spans from -65 C to +125 C. The contact pitch is 2.54 mm, compatible with 22 AWG wire.

Feature Summary

• Military-grade construction compliant with MIL-DTL-55302 standards for high reliability applications
• Gold-plated copper alloy socket contacts ensure stable signal transmission and corrosion resistance
• Polyphenylene sulfide housing provides thermal stability and mechanical durability within specified temperature ranges

Applications

• Avionics control systems requiring rugged interconnects
• Spacecraft electronic modules demanding strict environmental compliance
• Radar and communication equipment interfaces

Procurement Notes

Verify manufacturing origin and RoHS compliance status directly with Molex or authorized distributors before procurement. Confirm lead times and lot traceability documentation. Ensure the specific suffix matches project requirements as ordering suffixes may alter physical dimensions or plating thickness without changing the base part number function. Request certification of conformity upon delivery.

Selection Notes

Select this part for designs requiring a 50-position right-angle or straight PCB receptacle with solder cup termination. Verify that the 2.54 mm pitch aligns with the PCB footprint. Ensure the 5 A current rating per contact meets circuit load requirements. Confirm compatibility with mating plug components from the same W Series family to guarantee proper engagement and sealing characteristics.

Part Context

This component belongs to the AirBorn W Series, a line of rectangular connectors designed for harsh environments. The series is widely used in aerospace and defense sectors due to its adherence to military specifications. Molex acquired AirBorn, continuing production under the Molex brand while maintaining the established MIL-DTL-55302 performance standards.

Replacement Considerations

Cross-reference with other MIL-DTL-55302 compliant receptacles from qualified suppliers. Verify pinout compatibility and housing dimensions before substitution. Ensure equivalent material properties for PPS and gold plating thickness to maintain environmental resilience.