Eaton Souriau 85100E2041PW50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2041PW50
Quick Summary
The Eaton Souriau 85100E2041PW50 is a MIL-DTL-26482 square flange receptacle for rugged, high-vibration electrical connections. Engineers often struggle with reliable mating and seal integrity in harsh environments, and this backnut-equipped solution addresses those challenges with robust retention and corrosion resistance. Key certifications include MIL-DTL-26482 SI qualification and REACH compliance, underscoring its suitability for aerospace, industrial, and field deployments. For procurement and maintenance teams, the cadmium-plated aluminium shell, 41-contact cavities, and 1/3 bayonet coupling translate into faster assembly, easier field servicing, and long-term reliability in demanding applications, from factory floors to aircraft cabins and beyond.
Product Information
Extended Description
85100E2041PW50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos W; 85100E2041PW50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2041PW50
Product Length/Depth
34.5 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
46.7 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
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
41
Plating
Cadmium
Shell material
Aluminium
Shell size
20
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
41
Number of cavity #20
41
Feature: 41 contact cavities with solder cup pins enable high-density power and signal transfer. Business Impact: Supports complex I/O in a single connector, reducing the number of assemblies and potential failure points. Application: Used in equipment requiring compact, multi-pin connectivity with proven MIL-grade performance. The higher contact count also facilitates future expansion without changing the mating interface. Feature: 1/3 bayonet coupling provides quick, secure mating with minimal torque. Business Impact: Speeds up installation and service cycles while maintaining vibration resistance. Application: Ideal for on-site assembly and rapid field swaps in harsh environments. Feature: Cadmium plating on an aluminium shell improves corrosion resistance and durability. Business Impact: Extends service life in aggressive atmospheres and reduces maintenance frequency. Application: Widely used in outdoor and industrial settings where exposure is a concern. Feature: Backnut with straight backshell simplifies mounting and alignment. Business Impact: Ensures repeatable, tool-free installation and reliable sealing. Application: Panel-mounted installations that require consistent back-of-panel performance. Feature: Operating temperature range of -40 to 125 °C supports extreme environments. Business Impact: Maintains electrical performance across cold starts and hot operation cycles. Application: Aerospace, automotive, and heavy industry applications with wide thermal swings. Feature: Delivered with connector and 41-contact, solder-cup contacts. Business Impact: Enables immediate integration into systems with minimal sourcing steps, reducing project lead times. Application: Connector assemblies where quick deployment and proven MIL-spec conformity are essential.
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FAQs
For installation, ensure panel cutouts match the square flange receptacle footprint and use the backnut supplied with the assembly. The straight backshell orientation (W) supports proper mating alignment, while the 1/3 bayonet coupling allows quick, secure engagement. Take care with cadmium plating handling and verify environmental compliance (REACH) during installation.
MIL-DTL-26482 SI qualification confirms the connector’s ability to meet high-reliability, seal and vibration performance in aerospace and military-grade environments. It ensures compatibility with MIL-series counterparts, stable electrical performance over wide temperature ranges, and robust mechanical retention, making it suitable for demanding applications such as aircraft systems and rugged machinery.
Yes. The 85100E2041PW50 is a Receptacle with 41 contact cavities designed for 851-series mating plugs featuring a 1/3 Bayonet coupling. It ships with a backnut and a backshell, enabling straightforward panel mounting and reliable mating in vibration-prone environments. Verify polarity and contact arrangement (pin male, solder cup) for correct integration.
The connector operates from -40 °C to 125 °C, covering extreme cold starts and hot-operating conditions. It is designed for aggressive environments and is REACH-compliant, reflecting compliance with chemical safety standards. This makes it suitable for aerospace, industrial, and outdoor applications where thermal and environmental stress are common.
Maintenance benefits include durable cadmium-plated aluminium shells, which resist corrosion and extend service life in challenging settings. The 41-contact arrangement supports future scalability, while the backnut and bayonet coupling simplify field servicing and mating checks. Overall, the part reduces downtime, lowers replacement frequency, and improves system reliability in demanding installations.