Eaton 85100A2039S50 Receptacle - MIL-DTL-26482 SI Qualified
Part Number: 85100A2039S50
Quick Summary
The Eaton Souriau 851 series MIL-DTL-26482 SI qualified receptacle delivers rugged, reliable electrical connections for harsh aerospace and defense applications. Engineers often struggle with mating reliability, vibration resistance, and field repairability in rugged environments. Key credentials include MIL-DTL-26482 SI qualification, wide operating temperature from -40 to 125 °C, and REACH environmental compliance, supporting durability and regulatory alignment. Designed for high-density interconnects, the 85100A2039S50 offers a square flange receptacle, 39 solder cup contacts, and a bayonet coupling for rapid, secure mating—helping you reduce downtime and maintenance costs.
Product Information
Extended Description
85100A2039S50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos N; 85100A2039S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2039S50
Product Length/Depth
44 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
49.7 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
N
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 → Business Impact → Application: MIL-DTL-26482 SI qualified design ensures MIL-spec compatibility and reliability in vibration-prone environments, reducing field failures and warranty costs while enabling compliant system integration in aerospace and defense. Application: use in rugged onboard systems where reliability matters most. Feature → High-density interconnect: 39 solder cup contacts within a compact footprint enables dense wiring harnesses, lowering panel footprint and simplifying routing in tight spaces. Business impact: reduced harness complexity and weight, improving overall system efficiency. Application: aircraft avionics, military ground equipment, industrial control panels. Feature → 1/3 Bayonet coupling and straight backshell adaptor: fast, secure mating with minimal torque and intuitive installation. Business impact: faster assembly and maintenance, lower risk of misalignment. Application: field service and panel mounting. Feature → Aluminium shell with cadmium plating: lightweight yet sturdy corrosion protection for demanding environments. Business impact: durability and longevity in harsh environments, lowering replacement frequency. Application: outdoor or airborne installations. Feature → 39-contact, square flange receptacle: high-contact-count interface supports multi-channel signaling and power with reliable solder cup terminations. Business impact: enables robust multi-circuit interconnects with simple soldering workflows. Application: heavy machinery, aircraft systems. Feature → Wide operating temperature range (-40 °C to 125 °C) and REACH compliance: broad environmental tolerance and regulatory alignment. Business impact: ensures operation across extreme climates while meeting environmental standards. Application: aerospace, defense, industrial automation.
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FAQs
Begin by aligning the square flange with the panel cutout, ensuring the 39-contact cavity seats cleanly. Secure the flange with appropriate fasteners and then mate the plug with the bayonet coupling, applying even torque until a positive lock is felt. Verify solder cup wires are correctly routed and insulated, then perform a continuity check across all circuits to confirm a reliable, vibration-resistant connection.
This receptacle is MIL-DTL-26482 SI qualified and features a lightweight aluminium shell, cadmium plating for corrosion protection, a wide operating temperature range (-40 °C to 125 °C), and a high-density 39-contact arrangement. Together, these attributes deliver MIL-spec reliability, environmental resilience, and compact interconnects essential for aerospace and defense systems.
Key specs include 39 solder cup contacts in a square flange receptacle, 1/3 Bayonet coupling for secure mating, straight backshell, and a shell size of 20. The operating range is -40 °C to 125 °C, with cadmium plating and aluminium shell providing mechanical robustness and corrosion resistance in demanding environments.
Yes. The 85100A2039S50 carries REACH environmental compliance, aligning with modern regulatory expectations for chemical safety. In addition, it carries MIL-DTL-26482 SI qualification, which supports usage in regulated defense and aerospace programs where stringent interconnect performance is required.
With its solder cup contacts and robust aluminium shell, plan for periodic inspection of solder joints and mating surfaces to prevent corrosion or contamination buildup. The 1/3 Bayonet coupling facilitates quick mating and unmating, reducing downtime during maintenance. Replacing worn connectors with the same model ensures consistent electrical performance and system reliability.