Eaton 85100E2221SW50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2221SW50
Quick Summary
85100E2221SW50 is a square flange receptacle used for MIL-DTL-26482 SI qualified connections in harsh industrial environments. Engineers often struggle with ensuring reliable mounting, signal integrity, and corrosion resistance in field installations. This connector benefits from MIL-DTL-26482 SI qualification and REACH compliance, offering MIL-grade ruggedness while meeting environmental requirements. Designed for backnut mounting with a straight backshell and cadmium-plated aluminium shell, it simplifies installation and improves long-term reliability in critical systems. With a 21-position layout and W-oriented connectivity, it delivers high wiring density while reducing spare parts and procurement complexity for automation projects and panel builds.
Product Information
Extended Description
85100E2221SW50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos W; 85100E2221SW50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2221SW50
Product Length/Depth
34.5 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
60.5 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
W
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
21
Plating
Cadmium
Shell material
Aluminium
Shell size
22
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
21
Number of cavity #16
21
Feature: MIL-DTL-26482 SI qualification provides military-spec performance and reliability. Business Impact: Reduces field failure risk and helps meet stringent sector standards, enabling safer operation in heavy industrial and aerospace environments. Application: Ideal for rugged automation panels and aircraft ground support equipment. Feature: 21 contact positions in a compact shell size 22 layout. Business Impact: Increases channel density without enlarging the enclosure footprint, lowering wiring harness complexity and overall panel cost. Application: Dense I/O or signal distribution in control cabinets and robotic systems. Feature: 1/3 bayonet coupling with backnut and straight backshell. Business Impact: Fast, secure mating and straightforward field maintenance, reducing downtime and installation labor. Application: Quick-connect installations in tight installation spaces. Feature: Cadmium plating on an aluminium shell. Business Impact: Enhances corrosion resistance for extended service life in challenging environments, lowering maintenance costs. Application: Outdoor or wash-down areas in manufacturing, energy, and marine sectors. Feature: Solder Cup contacts with socket (female) termination. Business Impact: Reliable solder connections for 21 circuits with robust electrical performance and easy rework. Application: Wire harness terminations and field repair work, supported by a proven connector family that matches legacy interfaces. Feature: Operating temperature range -40 °C to 125 °C. Business Impact: Maintains performance across extreme ambient conditions, reducing thermal management requirements. Application: Machinery in temperate to hot environments, including automotive, automation, and process industries.
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FAQs
The 85100E2221SW50 uses a 21-position layout with a 1/3 bayonet coupling and a backnut backshell. It mates with Souriau 851-series equivalents designed for MIL-DTL-26482 SI qualified interfaces and employs solder cup contacts in socket (female) configuration. Ensure the counterpart is specified for the same layout and backnut orientation (W) for proper engagement.
The connector supports an operating temperature range from -40 °C to 125 °C, enabling reliable performance in extreme ambient conditions common in industrial automation, outdoor installations, and heavy machinery environments.
Yes. The 85100E2221SW50 features a backnut backshell and a straight backshell with a W orientation, facilitating straightforward panel mounting and consistent alignment in tight installations typical of control cabinets and rugged equipment.
The shell is aluminium with cadmium plating, delivering robust mechanical protection and corrosion resistance. The contacts are sold as solder cups, and the overall assembly is designed for 21 contact positions, with a square flange receptacle form factor suitable for durable field use.
Common applications include industrial automation panels, aerospace ground equipment, and heavy machinery wiring harnesses where high-density connections, rugged reliability, and MIL-spec qualification are essential. Its design supports dense layouts and quick mating without compromising electrical integrity.