Eaton 85100E2039SX50 Other/Miscellaneous - MIL-DTL-26482 SI qualified
Part Number: 85100E2039SX50
Quick Summary
The Eaton Souriau 851 series MIL-DTL-26482 SI qualified square flange receptacle provides rugged, field-ready connectivity for aerospace and industrial systems. Engineers often struggle with reliable mating, harsh environmental exposure, and long-term durability; this receptacle addresses those with a cadmium-plated aluminum shell and a robust backnut design. Key certifications include MIL-DTL-26482 SI qualification and REACH compliance, supporting regulatory alignment for defense, aerospace, and industrial equipment. Coupled with 39 solder-cup contacts and a straight backshell, it delivers predictable installation and fast field upgrades, boosting uptime. This combination translates into lower maintenance costs and improved system reliability across OEM and integration projects.
Product Information
Extended Description
85100E2039SX50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos X; 85100E2039SX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2039SX50
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
X
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 qualified square flange receptacle with backnut and cadmium plating. Business Impact: Delivers MIL-spec ruggedness and corrosion resistance, reducing field failures and maintenance costs. Application: Ideal for aerospace and industrial equipment requiring dependable rugged connectors. Feature: 39 solder-cup contacts in a high-density layout. Business Impact: Enables dense, reliable power and signal paths with simple solder termination, shortening assembly time. Application: Suitable for compact enclosures where channel count matters. Feature: 1/3 Bayonet coupling with straight backshell and X orientation. Business Impact: Quick mating and secure retention with minimal odds of partial connection, improving installation speed in production lines. Application: Fast field upgrades and serviceability in harsh environments. Feature: Cadmium plating on an Aluminium shell, shell size 20. Business Impact: Enhances durability and corrosion resistance while maintaining lightweight structure. Application: Harsh industrial environments and aerospace applications requiring robust shell protection. Feature: Operating temperature range -40 °C to 125 °C. Business Impact: Ensures performance in extreme conditions, reducing thermal-related failures and extending service life. Application: Equipment deployed in outside facilities or aerospace bays where thermal swings occur. Feature: Delivered with connector and backnut, ready for installation. Business Impact: Streamlines procurement and reduces on-site coordination, accelerating time-to-connect. Application: OEM assembly lines and systems integration projects.
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FAQs
The 85100E2039SX50 is a square flange receptacle designed to pair with a backnut as part of the 851 series assembly. It uses 39 solder-cup contacts and a straight backshell with X orientation, ensuring reliable alignment and mating in aerospace and industrial panels. Verify panel cutouts match the 851 series footprint for a secure, vibration-resistant connection.
The connector includes 39 solder-cup contacts configured for socket (female) delivery, enabling straightforward termination to conductors. Cadmium plating on an aluminium shell provides corrosion resistance, while the solder cups support consistent, low-resistance connections ideal for mixed power and signal paths in harsh environments.
For proper mating, align the connector orientation to X and engage the 1/3 bayonet coupling until fully seated. The backnut and straight backshell simplify panel mounting, while the cadmium-plated aluminium shell provides robust protection against misalignment and mechanical stresses common in field service.
This receptacle carries MIL-DTL-26482 SI qualification, providing military-style reliability and interchangeability. REACH compliance is listed among its environmental conditions, supporting regulatory requirements for European markets and global supply chains. Engineers should cite these standards to ensure lifecycle support and regulatory alignment in defense, aerospace, and industrial applications.
The combination of rugged MIL-spec qualification, corrosion-resistant cadmium plating, and a straightforward solder-cup termination reduces field failures and maintenance needs. With 39 contacts in a compact shell, installations are faster and more reliable, improving uptime and predictable lifecycle costs for OEMs and integrators.