Eaton 85100E2039SY50 Receptacle - MIL-DTL-26482
Part Number: 85100E2039SY50
Quick Summary
Eaton 85100E2039SY50 Receptacle is a rugged MIL-DTL-26482 SI qualified square flange connector for harsh industrial and aerospace environments. This design addresses field reliability challenges driven by vibration, moisture exposure, and complex wiring in tight panels. It is MIL-DTL-26482 SI qualified and REACH compliant to support regulated programs and supply-chain expectations. Built for long-term installation with a backnut, cadmium plating, and a 39-contact arrangement, it offers plug-and-forget reliability. By integrating with existing 851 series ecosystems, it minimizes redesign costs while speeding deployment across automation and avionics applications. In short, it delivers robust performance, compatibility, and regulatory peace of mind for engineers and procurement teams.
Product Information
Extended Description
85100E2039SY50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos Y; 85100E2039SY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2039SY50
Product Length/Depth
34.5 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
50.1 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
39
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
39
Number of cavity #20
39
Feature: MIL-DTL-26482 SI qualification aligns with strict performance requirements. Business Impact: reduces qualification lead times and ensures traceability for critical programs. Application: ideal for aerospace, defense, and industrial automation where reliability is non-negotiable. Feature: 39 contacts in a square flange receptacle with a 20 shell size. Business Impact: enables high-density wiring while maintaining a compact footprint, lowering panel complexity and harness length. Application: backplanes, control panels, and complex harness assemblies. Feature: Socket (Female) solder cup contacts with cadmium plating. Business Impact: provides secure terminations with enhanced corrosion resistance in demanding environments. Application: fixed installations exposed to humidity, dust, and temperature cycling. Feature: 1/3 Bayonet coupling and straight backnut shell. Business Impact: fast, reliable mating with repeatable performance and straightforward maintenance. Application: field upgrades and service in tight installations where space is at a premium. Feature: Aluminium shell, 34.5 mm length, 36.9 mm width/height, weight 50.1 g. Business Impact: lightweight yet rugged enclosure that simplifies handling and reduces overall system weight. Application: aerospace and industrial equipment where weight matters. Feature: Delivered with connector and REACH compliant. Business Impact: minimizes sourcing steps and ensures regulatory alignment across global supply chains. Application: engineering projects requiring supplier readiness and compliance.
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FAQs
This receptacle is designed to integrate with Eaton Souriau 851 series components. It uses a square flange receptacle configuration with 1/3 Bayonet coupling and a backnut for secure mounting, aligning with 851 series mating interfaces. The 39-contact layout supports seamless replacement without extensive redesign while preserving connector orientation (Y).
Key specs include 39 contacts, Solder Cup contact type, socket (female) contact gender, aluminium shell (size 20), cadmium plating, and straight backshell. Operating temperature ranges from -40 °C to 125 °C. The connector is a square flange receptacle with backnut, delivered with connector, and supports 1/3 Bayonet coupling.
Best for aerospace, defense, and industrial automation where high reliability and vibration resistance are essential. The 85100E2039SY50 supports dense wiring in control panels, backplanes, and avionics harnesses, delivering compact footprint, reliable solder-cup terminations, and compatibility with existing 851-series ecosystems.
The connector carries MIL-DTL-26482 SI qualification for high-reliability use and REACH compliance for environmental safety. Cadmium plating is noted, implying attention to regulatory constraints in specific regions. These certifications support regulated program requirements and supplier chain traceability.
Benefits include reduced qualification time, fewer redesign costs, and faster deployment due to compatibility with the 851 series. The 39-contact, high-density design minimizes wiring complexity, while the durable aluminium shell and backnut mounting lower maintenance needs and field downtime in harsh environments.