M55302/55-A44S

Overview

The M55302/55-A44S is a rectangular MIL-Spec connector from the AirBorn W Series, manufactured by Molex. It features 44 positions arranged in two rows with a 2.54 mm pitch. The component utilizes gold-plated copper alloy contacts and a Polyphenylene Sulfide (PPS) housing. Designed for free-hanging or panel mounting, it supports a temperature range of -65°C to +125°C and offers an insulation resistance of 5 GOhms.

Feature Summary

• Complies with MIL-DTL-55302 military specifications for rugged reliability
• Utilizes gold-plated copper alloy contacts for stable signal transmission
• Constructed with high-performance Polyphenylene Sulfide (PPS) insulation

Applications

• Military avionics systems requiring standardized interconnects
• Ruggedized ground-based communication equipment
• Defense electronics operating in extreme thermal environments

Procurement Notes

Verify the specific suffix against the official manufacturer datasheet to confirm exact contact configuration and mounting style. Ensure compatibility with mating connectors within the same MIL-DTL-55302 series. Confirm RoHS compliance status if required for specific program constraints. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a 44-position, two-row connector is required for MIL-DTL-55302 applications. Verify that the 2.54 mm pitch matches the PCB layout or cable harness design. Ensure the operating environment falls within the specified -65°C to +125°C range. Confirm that the free-hanging or panel mount style aligns with the mechanical assembly requirements.

Part Context

This part belongs to the AirBorn W Series, a line of rectangular connectors designed for high-density interconnects in demanding environments. The series is characterized by its robust construction and adherence to strict military standards, ensuring performance in aerospace and defense sectors where reliability is critical.

Replacement Considerations

Direct substitutes must match the 44-position count, two-row configuration, and MIL-DTL-55302 specification. Verify identical pinout and mounting dimensions before substitution. Generic commercial equivalents are not suitable due to differing environmental ratings.