Eaton 85100E2041SY50 Receptacle - MIL-DTL-26482 SI Qualified
Part Number: 85100E2041SY50
Quick Summary
The Eaton 85100E2041SY50 Receptacle is a high-density MIL-DTL-26482 SI qualified connector designed for rugged environments and tight installations. Engineers often struggle with mating reliability and corrosion resistance in harsh conditions, especially in compact equipment layouts; this square flange receptacle addresses those challenges with a cadmium-plated aluminum shell and a robust backnut assembly. It is SI qualified and REACH compliant, signaling suitability for aerospace and demanding industrial markets. The 41-position layout, solder-cup contacts, and delivery-with-connector option streamline wiring, while the Y orientation supports flexible harness routing. The result is faster assembly, improved reliability, and lower total cost of ownership in temperature-extreme applications.
Product Information
Extended Description
85100E2041SY50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos Y; 85100E2041SY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2041SY50
Product Length/Depth
34.5 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
50 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
Y
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
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-position layout and 1/3 bayonet coupling; Business Impact — enables high-density wiring with reliable signal paths and faster mating cycles; Application — ideal for aerospace harnesses and compact industrial controllers, reducing panel footprint while maintaining signal integrity. Feature — cadmium plating on an aluminium shell; Business Impact — delivers corrosion resistance in harsh environments and improves long-term reliability; Application — suitable for outdoor or chemical-exposure environments such as factory floors and aviation bays. Feature — backnut and straight backshell; Business Impact — simplifies installation with secure strain relief and straightforward maintenance; Application — supports quick field swaps and resilient assemblies in confined spaces. Feature — solder cup contacts loaded for 41 positions; Business Impact — ensures robust solder joints and consistent electrical contact; Application — preferred for high-pin-count assemblies in control panels. Feature — delivered with connector and Y orientation; Business Impact — reduces assembly steps and wiring errors; Application — accelerates onboarding of new harnesses in complex systems. Feature — operating range -40 °C to 125 °C; REACH compliant; Business Impact — expands usable environmental envelope and regulatory alignment; Application — fits aerospace, industrial automation, and military-grade equipment portfolios.
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FAQs
The 85100E2041SY50 is a square flange receptacle from the Eaton Souriau 851 series designed for MIL-DTL-26482 compatibility. It features a backnut, straight backshell, and 1/3 bayonet coupling, with 41 solder cup female contacts. It ships delivered with connector, ready for mating with compatible 851-series plugs, simplifying field assembly and reducing risk of mis-mating in crowded harness environments.
This receptacle is rated for -40 °C to 125 °C operating temperatures, making it suitable for extreme conditions. It carries REACH compliance and MIL-DTL-26482 SI qualification, indicating strong environmental and military-standard performance for aerospace and rugged industrial applications.
Installation benefits come from the backnut and straight backshell design, the 41-position load with solder cup contacts, and the delivered-with-connector option. These features reduce assembly steps, minimize harness routing complexity, and speed field servicing in dense panels, which translates to lower labor costs and shorter downtime in critical production lines.
Key specs include 41 total contacts with a 41-cavity layout, cadmium plating, aluminium shell size 20, and 34.5 mm depth with 36.9 mm height and width. It uses a 1/3 bayonet coupling, Y orientation, and provides socket (female) solder cup contacts, ensuring robust, high-density connections within compact enclosures.
Choosing the 85100E2041SY50 delivers reliability in combat-tested MIL-DTL-26482 environments, regulatory alignment with REACH, and reduced maintenance via corrosion resistance and durable solder joints. The high-density 41-position design enables compact harnessing, faster assemblies, and predictable lifecycle costs, making it a strong ROI choice for aerospace, defense, and automated industrial systems.