Eaton 85100E2221S50 MIL-DTL-26482 Receptacle - SI Qualified
Part Number: 85100E2221S50
Quick Summary
Eaton 85100E2221S50 MIL-DTL-26482 receptacle provides rugged, square-flange mating for demanding military and industrial connectors. Engineers often confront compatibility gaps, mixed environments, and time-consuming installation in harsh settings. This connector is MIL-DTL-26482 SI qualified and REACH compliant, with cadmium plating and an aluminum shell that delivers robust corrosion resistance. Its straight backshell, backnut design, and 21 solder-cup contacts simplify field assembly while maintaining electrical performance. Delivered with connector options and N orientation, it supports compact layouts without sacrificing accessibility. For OEMs and integrators, the 85100E2221S50 reduces rework risk, accelerates panel layout, and improves reliability in aerospace, automation, and heavy equipment applications. This data-driven choice supports long-term TCO reduction through improved uptime.
Product Information
Extended Description
85100E2221S50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos N; 85100E2221S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2221S50
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
N
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 qualified square flange receptacle with 21 solder-cup contacts. Business Impact: Ensures interoperability with qualified components, reducing integration risk and enabling consistent performance across fleets. Application: Aerospace, defense, and rugged industrial assemblies demanding standardized interfaces. Feature → Benefit: Quick mating and reliable electrical contact reduces maintenance cycles and downtime, improving overall equipment effectiveness in demanding environments. Feature: 1/3 bayonet coupling with backnut and straight backshell. Benefit: Faster, vibration-resistant mating with simpler field servicing, saving panel-time during installation or repair. Application: Panel-mounted harnesses and field upgrades in tight or harsh spaces. Feature: Cadmium plating on an aluminium shell (shell size 22). Benefit: Enhanced corrosion resistance and durable thermal performance for outdoor or contaminate-prone environments. Application: Outdoor equipment, mining, and heavy machinery. Feature: Operating temperature range from -40 °C to 125 °C. Benefit: Wide-environment capability reduces the need for multiple SKUs and supports global deployments. Application: Equipment exposed to extreme ambient conditions. Feature: Backnut, N orientation, and delivered-with-connector configuration with 21-contact layout. Benefit: Streamlined installation and predictable fit with existing Eaton Souriau accessories. Application: OEM assemblies seeking reliable compatibility and reduced part variance.
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FAQs
Install the square flange receptacle using the backnut while aligning the N orientation per the catalog. The 1/3 bayonet coupling provides quick, secure mating, and the backnut design helps preserve alignment during tightening. Ensure the 21 solder-cup contacts seat properly before mating the plug and verify ingress protection through the appropriate seals.
The connector features 21 solder-cup contacts in a 21-contact layout, cadmium plating on an aluminium shell size 22, and a straight backshell with a backnut. Operating temperature ranges from -40 °C to 125 °C, and it complies with REACH; contact delivery is loaded.
Yes. It is MIL-DTL-26482 SI qualified, cadmium-plated for corrosion resistance, and built on an aluminium shell. Its wide operating temperature range and robust mating design make it well-suited for aerospace, defense, and rugged automation applications.
The product is MIL-DTL-26482 SI qualified and REACH compliant, with a durable cadmium-plated aluminium shell designed for reliable operation in demanding settings.
Choosing the 85100E2221S50 reduces rework risk and panel-space concerns through its standardized 21-contact layout, quick mating 1/3 bayonet coupling, and durable materials, leading to lower maintenance costs, fewer field failures, and faster deployment in OEM assemblies.