Eaton 85100E2039PX50 Receptacle - MIL-DTL-26482 SI Qualified
Part Number: 85100E2039PX50
Quick Summary
The 85100E2039PX50 is a MIL-DTL-26482 SI qualified square flange receptacle for rugged electrical connections in aerospace, defense, and industrial automation. Engineers frequently face reliability and vibration challenges; this connector's straight backshell, backnut, and 39-contact layout help maintain mating integrity under demanding conditions. It complies with REACH and features an aluminium shell with cadmium plating for durability in harsh environments. With a delivered-with connector option and 1/3 bayonet coupling, installation is streamlined and field serviceable, supporting high-density wiring and straightforward harness routing. These characteristics drive lower field failure rates and shorter maintenance cycles, delivering measurable total cost of ownership benefits for mission-critical systems.
Product Information
Extended Description
85100E2039PX50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos X; 85100E2039PX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2039PX50
Product Length/Depth
34.5 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
46.8 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
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
Feature – MIL-DTL-26482 SI qualified construction provides proven performance and regulatory compliance. Business impact – reduces program risk by guaranteeing interoperability and reliability across platforms. Application – ideal for aerospace, defense, and rugged industrial automation harnesses where dependable mating under vibration is essential. Feature – 39 contacts in a compact 34.5 mm depth enclosure enables high-density wiring without expanding panel size. Business impact – increases signal density, reduces panel footprint, and lowers system weight and cost in control panels and robotic modules. Application – suitable for high-density harnesses in avionics and industrial automation. Feature – 1/3 Bayonet coupling allows quick, secure mating, lowering assembly time. Business impact – improves uptime and simplifies field maintenance. Application – frequently used in harsh environments with limited service access. Feature – cadmium plating on an aluminium shell delivers corrosion resistance with light weight. Business impact – longer service life and lower maintenance costs in outdoor or aggressive settings. Application – outdoor automation and defense equipment. Feature – Delivered with connector option and straight backshell orientation X streamline harness routing and installation. Business impact – reduces assembly steps and mismatch risk, enabling faster production and easier upgrades. Application – panel-mounted installations and modular systems in automation environments. These combined features support compliance, reliability, and cost efficiency for customers deploying high-performance mil-spec connectors.
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FAQs
This model is a square flange receptacle with a straight backshell and backnut, designed to mount on panels with precise alignment. It ships delivered with connector, supports 39 contacts in a 20-shell size footprint, and pairs with 851 series interfaces for consistent mating. Orientation is X, enabling flexible harness routing in tight enclosures and compatible with solder cup male contacts.
Key specs include 39 contacts, cadmium plating, aluminium shell, 34.5 mm depth, 36.9 mm height and width, and a weight of 46.8 g. It operates from -40 °C to 125 °C, uses solder cup contact delivery (male pins), and employs 1/3 Bayonet coupling for secure, quick mating.
Yes. The MIL-DTL-26482 SI qualification ensures high-reliability performance under vibration and harsh conditions. The 1/3 Bayonet coupling provides robust retention, and the backnut backshell configuration along with cadmium plating on aluminium shell enhances durability in demanding aerospace, defense, and industrial automation applications.
The connector is MIL-DTL-26482 SI qualified and REACH compliant, with cadmium plating and aluminium shell designed for durability in tough environments. The REACH status supports regulatory compliance for environmental impact, while the MIL-spec qualification supports industry standards for military and aerospace use.
The combination of high-density 39-contact capacity, quick mating via 1/3 Bayonet coupling, and reliable backnut backshell reduces assembly time, field downtime, and maintenance cycles. Durable materials and wide operating range -40 to 125 °C lower lifecycle costs by reducing field replacements and extending service intervals in mission-critical systems.