Eaton 85100E2041PX50 Receptacle - MIL-DTL-26482
Part Number: 85100E2041PX50
Quick Summary
The Eaton 85100E2041PX50 is a MIL-DTL-26482 SI qualified square flange receptacle used in rugged aerospace and industrial wiring. Engineers often struggle with reliable mating, corrosion protection, and field maintenance in harsh environments. This product is MIL-DTL-26482 SI qualified and REACH compliant, featuring an aluminium shell with cadmium plating for corrosion resistance and a backnut design for secure mounting. Its 41 contacts deliver high-density signaling, while solder cup contacts simplify assembly in tight service conditions. For automation and aerospace programs, this combination reduces downtime, improves traceability, and supports compliant, long-life installations.
Product Information
Extended Description
85100E2041PX50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos X; 85100E2041PX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2041PX50
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
X
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 → Business Impact → Application: The MIL-DTL-26482 SI qualification ensures traceable, repeatable performance in critical applications, reducing warranty costs and field failures, which translates to lower lifecycle risk for avionics and rugged industrial harnesses. The square flange receptacle with a backnut provides quick, secure mounting, minimizing installation time on complex panels and improving field serviceability in machinery and aircraft. Cadmium plating on an aluminium shell delivers robust corrosion resistance in harsh environments, extending service life in coastal facilities, dry deserts, and high-temperature plants. The 1/3 bayonet coupling delivers fast mating with strong vibration resistance, ideal for mobile equipment, robotics, and aerospace harnesses. Solder cup contacts simplify wire termination, delivering reliable electrical performance and easier on-site maintenance in tight spaces. The 41-contact layout supports high-density signaling without enlarging the footprint, aligning with modern control system architectures.
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FAQs
The 85100E2041PX50 is a square flange receptacle from the Souriau 851 series with a backnut and 41 solder cup contacts. It uses a 1/3 bayonet coupling and X orientation, designed to pair with corresponding Souriau 851-series plugs and compatible backnut assemblies. Delivered with connector, it provides a secure, vibration-resistant connection suitable for harness assemblies in aerospace and industrial equipment.
It features an aluminium shell with cadmium plating, 41 solder cup contacts, and a straight backshell. The contact arrangement is 41 cavities with 41 contacts, designed to operate from -40 °C to 125 °C, and built for long-term reliability in harsh environments. The backnut mounting and square flange geometry support robust mating in vibration and thermal cycling.
Yes. The MIL-DTL-26482 SI qualification ensures compliance with critical aerospace standards, while the high-density 41-contact layout supports complex signal architectures typical in avionics and automation. The aluminium shell and cadmium finish deliver corrosion resistance, and the 1/3 bayonet coupling provides rapid, secure mating in installations with limited space.
This receptacle is MIL-DTL-26482 SI qualified, reflecting rigorous mechanical and electrical performance. It also lists REACH environmental compliance. The product belongs to Eaton Souriau's 851 series and features 41 receptacle contacts with a cadmium plating and aluminium shell, meeting industrial and aerospace procurement requirements.
Its backnut design, straight backshell, and solder cup contacts minimize field maintenance, enabling straightforward installation and reliable service across years. The 41-circuit configuration supports high-density harnessing, reducing connector count and upfront cost, while its rugged construction improves uptime in vibration, temperature cycling, and exposure to contaminants.