Eaton 85100AC2039PX50 Souriau 851 Series MIL-DTL-26482 SI qualified
Part Number: 85100AC2039PX50
Quick Summary
Eaton 85100AC2039PX50 is a MIL-DTL-26482 square flange receptacle designed for high-reliability control wiring in harsh environments. Engineers often struggle with corrosion, complex field assembly, and tight enclosures that complicate secure mating. This part is MIL-DTL-26482 SI qualified and REACH compliant, with cadmium plating and an aluminium shell for rugged durability. It delivers a 39-cavity, male solder-cup contact arrangement in a straight backshell, enabling straightforward panel mounting and dependable signal integrity. The combination of a 1/3 bayonet coupling and precise layout supports quick assembly and robust vibration resistance. Used across aerospace, defense, and industrial automation applications, it provides a dependable, long‑life connector solution where reliability and electrical performance matter most.
Product Information
Extended Description
85100AC2039PX50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, male solder contacts, pos X; 85100AC2039PX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2039PX50
Product Length/Depth
53 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
54.7 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
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
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
MIL-DTL-26482 SI qualified supports mission-critical programs with proven interoperability and traceability, reducing qualification risk and fostering supply chain confidence. Business impact: documented reliability in military and aerospace environments. Application: airframes, ground equipment, and rugged control systems requiring durable connectors. The 39-pin, male solder-cup contact arrangement enables high-density signaling with solid solder joints, cutting rework and ensuring stable electrical performance. Impact: faster assembly, lower maintenance, and improved retrofitability in complex harnesses. Cadmium plating enhances corrosion resistance for salt spray and aggressive atmospheres while REACH compliance aligns with modern environmental standards, preserving regulatory parity across markets. Application: defense, offshore, and heavy industrial automation where longevity matters. Aluminium shell and 20-size housing deliver lightweight strength, aiding weight-sensitive platforms and vibration-prone assemblies. Impact: easier handling, reduced transport costs, and resilient performance in dynamic environments. This 851 series receptacle is compatible with straight backshell configurations and 1/3 bayonet coupling, supporting field replaceability and rapid upgrades in existing installations. Application: aircraft, ships, and industrial machinery requiring reliable, high-contact density connections.
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FAQs
Installation begins with aligning the 39-pin male solder-cup contact layout to the mating connector, then securing the square flange receptacle to the panel using the appropriate fasteners. Use the straight backshell adaptor and ensure correct X orientation. Engage the 1/3 bayonet coupling for a secure, vibration-resistant connection and verify continuity across all 39 contacts after installation. Follow REACH guidelines during handling and assembly.
The connector is MIL-DTL-26482 SI qualified, offering proven reliability in military and aerospace settings. Cadmium plating provides enhanced corrosion resistance, and the aluminium shell balances strength with light weight. Operating temperature range from -40 °C to 125 °C supports extreme conditions, while REACH compliance ensures regulatory suitability for many global programs.
Yes. The 85100AC2039PX50 is part of the Souriau 851 series and uses standard MIL-DTL-26482 interfaces, including the 39-contact layout and 1/3 bayonet coupling. When selecting mating components, ensure identical cavity count, backshell type, and orientation (X) to guarantee a proper fit and reliable mating in your harness assemblies.
This receptacle is MIL-DTL-26482 SI qualified, indicating suitability for stringent defense/aerospace applications. It is REACH compliant, and the product features cadmium plating for corrosion resistance. Users should confirm cadmium usage meets their internal and regulatory requirements, as some programs prohibit cadmium in newer designs.
Key dimensions include a length/depth of 53 mm and a square cross-section with 36.9 mm width and height, plus a 39-contact cavity layout. The weight is 54.7 g. The connector uses a straight backshell, aluminium shell (Shell Size 20), and a 1/3 bayonet coupling with pin (male) solder-cup contacts. Orientation is X, supporting precise panel placement and routing in tight spaces.