M55302/56C66

Overview

The M55302/56C66 is a rectangular MIL-Spec connector from the AirBorn W Series, manufactured by Molex. It features 66 positions arranged in a single row with male pin contacts. The connector utilizes gold-plated copper alloy terminals and a polyphenylene sulfide (PPS) insulator. Designed for board-to-board applications, it supports a pitch of 2.54 mm and operates within a temperature range of -65°C to +125°C.

Feature Summary

• High-reliability ruggedized design suitable for demanding environments
• Compliance with strict MIL-DTL-55302 standards
• Gold-plated contacts for enhanced conductivity and corrosion resistance

Applications

• Board-to-board interconnections
• Military and aerospace systems
• High-reliability electronic assemblies

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with Molex/AirBorn before procurement. Confirm that the ordering suffix matches the required contact plating and termination style. Ensure compatibility with mating connectors in the same W Series family to guarantee proper interface alignment and electrical performance.

Selection Notes

Select this component when a high-density, single-row header with 66 positions is required. The 2.54 mm pitch allows for standard spacing in dense layouts. Consider the operating temperature range and material compatibility with the PCB substrate. Verify that the male pin configuration aligns with the intended receptacle or cable assembly interface requirements.

Part Context

This part belongs to the AirBorn W Series, a premium line of ruggedized connectors designed for critical applications. The series is known for meeting stringent military specifications, ensuring trusted performance where failure is not an option. Molex acquired AirBorn, maintaining the brand's reputation for high-quality interconnect solutions.

Replacement Considerations

Check for direct substitutes within the W Series family with equivalent position counts. Verify mechanical dimensions and pinout configurations against existing designs. Ensure any replacement meets the same MIL-DTL-55302 standards and environmental ratings.