Eaton 85100A2255PW50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100A2255PW50
Quick Summary
The Eaton 85100A2255PW50 MIL-DTL-26482 SI qualified receptacle provides a rugged, high-density electrical interface for harsh environments. Manufacturing and maintenance teams often face mating reliability and environmental exposure challenges in compact installations. Key certifications include MIL-DTL-26482 SI qualification and REACH compliance, signaling both defense-grade performance and regulatory readiness. Designed for aerospace and industrial automation, it offers a square flange receptacle with a straight adaptor, cadmium plating, and 55 contacts for dense signal and power transfer. Using this connector reduces assembly time with delivered-with-connector options and a reliable 1/3 bayonet coupling, supporting faster field upgrades.
Product Information
Extended Description
85100A2255PW50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, male solder contacts, pos W; 85100A2255PW50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2255PW50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
54.6 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
W
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Pin (Male)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
55
Plating
Cadmium
Shell material
Aluminium
Shell size
22
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
55
Number of cavity #20
55
Feature: MIL-DTL-26482 SI qualification ensures proven military-standard compatibility. Impact: Improves risk management and part traceability in regulated programs, lowering qualification lead times and rework costs. Application: Ideal for defense contractors and aerospace OEMs requiring verified, high-integrity interconnects in harsh environments. Feature: 55 contact layout with solder cup contacts. Impact: Enables high-channel density for complex systems, reducing harness size and optimizing overall panel space. Application: Use in armament systems, avionics, and precision machinery where many discrete signals must coexist. Feature: Cadmium plating on an aluminium shell. Impact: Delivers corrosion resistance and lightweight durability, extending service life in challenging environments. Application: Suitable for outdoor enclosures and high-impedance assemblies common in industrial plants and aircraft support equipment. Feature: 1/3 bayonet coupling and straight backshell adaptor. Impact: Fast, secure mating with minimal torque requirements, simplifying assembly and maintenance. Application: Field upgrades and serviceability in tightly packed racks or panels. Feature: Square flange receptacle with W orientation and 22 shell size. Impact: Predictable alignment and robust mechanical interface across mating connectors, improving uptime. Application: Standardized for modular systems in automation cabinets and aircraft systems. Feature: Operating temperature range -40 °C to 125 °C. Impact: Maintains performance in extreme climates and high-temperature operations, reducing thermal-related failures. Application: Used in elevated-temperature environments like engine bays and outdoor process plants. Feature: Delivered with connector option and 55 cavities. Impact: Streamlines procurement and installation, ensuring compatibility with customer harnesses. Application: Useful for customers seeking plug-and-play readiness and reduced assembly steps.
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FAQs
The 85100A2255PW50 is a Souriau 851-series MIL-DTL-26482 SI qualified square flange receptacle with a 55-contact layout and a cadmium plated aluminium shell. It uses a 1/3 bayonet coupling and is delivered as a complete connector assembly with a straight backshell adaptor. When pairing with mating plugs from the same series, expect consistent impedance, alignment, and a reliable bayonet mating cycle that reduces field rework.
Its MIL-DTL-26482 SI qualification ensures military-standard performance and interoperability, while a wide operating temperature range (-40 °C to 125 °C) supports harsh environments typical of aerospace and defense scenes. Cadmium plating adds corrosion resistance, and the aluminium shell balances strength with lightweight design, aligning with stringent airframe and weapon systems requirements.
Yes, the product specification notes REACH as an environmental condition, indicating regulatory readiness for European markets. With MIL-DTL-26482 SI qualification and cadmium plating, users should evaluate any internal policy constraints regarding plating materials, but the connector itself is designed for demanding, regulated industrial and aerospace applications.
Plan for a straight backshell adaptor and a W orientation to match your chassis design, and ensure mating with a compatible square flange plug. The 55-contact layout supports high channel counts, so verify harness routing to avoid crosstalk. The 1/3 bayonet coupling enables quick, secure field mating, reducing installation time and maintenance downtime.
Key specs include 55 contacts with solder cup terminals, cadmium plating, aluminium Shell size 22, and a -40 to 125 °C operating range. The connector is a square flange receptacle with a straight backshell adaptor, suitable for dense signal and power transfer in aerospace and industrial automation environments while maintaining mechanical robustness.