Eaton 85100A2221S50 MIL-DTL-26482 Receptacle - SI Qualified
Part Number: 85100A2221S50
Quick Summary
The Eaton Souriau 851 series MIL-DTL-26482 SI qualified receptacle enables robust, high-contact connections for aerospace and industrial control harnesses. This design addresses common pain points such as corrosion risk, misalignment, and failures in extreme temperatures. By meeting MIL-DTL-26482 SI qualification and featuring a cadmium-plated aluminum shell with a square flange receptacle layout, it supports demanding programs with regulatory alignment and long-term durability. The connector ships with the mating option, 21 solder-cup contacts, and a N orientation, reducing assembly steps in field installs. With compatibility to a straight backshell adaptor and 1/3 bayonet coupling, it offers installation efficiency and lifecycle cost benefits for rugged environments and high-reliability applications.
Product Information
Extended Description
85100A2221S50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos N; 85100A2221S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2221S50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
58.5 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
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
High-density contact arrangement enables 21 contacts in a square flange receptacle, with socket (female) solder-cup contacts. This density supports mixed-signal and power lines while preserving a compact footprint on equipment panels. The 21 cavities align with the 851 series layout, simplifying harness design and improving cabling reliability in vibrations. The 1/3 bayonet coupling provides fast, repeatable mating with confident retention. This reduces assembly time and field misalignment, even in constrained spaces. Cadmium plating on the shell increases corrosion resistance and environmental durability in harsh applications. The aluminium shell provides a strong yet lightweight enclosure and a 22 shell size that fits dense equipment bays, supporting extended service life and reduced maintenance costs. Delivered with a connector option out of the box reduces on-site assembly time and testing steps, ensuring correct mating geometry. It aligns with straight backshell adaptor compatibility for flexible harness routing. Operating temperature range from -40 °C to 125 °C covers extreme climates and high-energy industrial environments, while REACH-compliant materials support regulatory alignment across modern supply chains. Compatibility with 21 cavities and 1/3 bayonet coupling enables scalable wiring schemes for growing systems.
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FAQs
The 85100A2221S50 is a square flange receptacle designed to mate with Souriau 851 series MIL-DTL-26482 components. It features 21 solder-cup contacts, a N orientation, and a straight backshell adaptor option, enabling straightforward alignment and secure, vibration-resistant connections in dense harness layouts.
It provides 21 contacts in a single 21-cavity layout, uses socket (female) solder-cup contacts, and employs a 1/3 bayonet coupling with a cadmium-plated aluminium shell (size 22). The operating temperature range is -40 °C to 125 °C, and it is delivered as a ready-to-mate receptacle with connector options.
Yes. The MIL-DTL-26482 SI qualification, cadmium plating, aluminium shell, and wide operating temperature range make it suitable for aerospace and defense harnesses, as well as industrial automation equipment exposed to vibrations, dust, and temperature extremes.
Primary compliance is MIL-DTL-26482 SI qualification. The design also emphasizes environmental and material considerations such as REACH-adjacent materials. This helps ensure regulatory alignment for aerospace, defense, and industrial programs while supporting supplier qualification requirements.
Delivered with connector options reduces field labor by ensuring correct mating geometry out of the box, while the 1/3 bayonet coupling and straight backshell adaptor streamline assembly. The rugged cadmium-plated aluminium shell also supports longer service intervals and lower lifecycle maintenance costs in demanding environments.