Eaton 85100E2221PW50 Receptacle - MIL-DTL-26482 SI

Part Number: 85100E2221PW50
Manufacturer
Eaton
Part number
85100E2221PW50

Quick Summary

85100E2221PW50 is a square flange receptacle for MIL-DTL-26482 interconnects in aerospace and industrial systems. When space constraints or harsh environments create mating challenges, engineers need reliable, plug-and-go solutions that withstand vibration and temperature swings. This part is MIL-DTL-26482 SI qualified and REACH compliant, with cadmium plating and a robust aluminum shell designed for long service life. Its 21-pin layout, backnut configuration, and solder cup contacts simplify installation and maximize reliability in tight assemblies. For design teams pursuing rugged performance and regulatory alignment, this connector delivers predictable, service-ready interconnectivity across demanding applications.

Product Information

Extended Description

85100E2221PW50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos W; 85100E2221PW50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2221PW50
Product Length/Depth
34.5 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
53 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
Pin (Male)
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 proven interoperability with a wide range of qualified mating systems, reducing integration risk and testing time. Business Impact → Accelerated deployment and fewer field reworks, enabling faster time-to-value in aerospace and industrial automation. Application → Suitable for mission-critical harnesses where reliability matters most. Feature → High-density 21-contact layout with 34.5 mm depth and 40x40 mm footprint optimizes space in compact panels. Business Impact → Greater channel density without enlarging the housing, improving system architecture and reducing wiring complexity. Application → Ideal for avionics bays and control cabinets with limited panel real estate. Feature → Cadmium plating on an aluminum shell with backnut and straight backshell for secure mating. Business Impact → Enhanced corrosion protection and sturdy mechanical integrity, lowering maintenance costs. Application → Harsh environments and vibration-prone installations benefit from durable mating interfaces. Feature → Solder Cup contact delivery provides robust, soldered connections. Business Impact → Reliable electrical performance and easier field servicing. Application → Cable-to-board or cable-to-cable terminations where soldering remains preferred. Feature → 1/3 Bayonet coupling and W orientation simplify mating and orientation. Business Impact → Quick, repeatable mating with reduced torque risk and improved installation accuracy. Application → Military, aerospace, and industrial systems requiring quick, lock-in coupling. Feature → Operating temperature range from -40 °C to 125 °C. Business Impact → Maintains performance across extreme temperatures, minimizing field failures. Application → Thermal cycling environments common in aircraft and heavy equipment. Feature → Backnut receptacle with square flange, delivering effective strain relief. Business Impact → Secure mechanical retention and improved sealing characteristics to protect contacts. Application → Panel-mounted interconnects in rugged installations. Feature → 21 contacts with a 21-cavity layout supporting reliable distribution. Business Impact → Fulfilled signal and power needs in a compact form factor. Application → Control panels and harness assemblies demanding dense interconnects.

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FAQs

When installing the 85100E2221PW50, align the receptacle with the panel cutout, secure the backnut for proper strain relief, and ensure the 1/3 bayonet coupling engages fully. Use the solder cup contacts for robust cable termination and verify W orientation to maintain proper mating polarity. The aluminum shell provides mechanical strength without excessive weight.
Yes. The connector operates from -40 °C to 125 °C and is MIL-DTL-26482 SI qualified, offering reliable performance in vibration-prone and temperature-fluctuating applications. Cadmium plating on an aluminum shell adds corrosion resistance, while the backnut design supports secure, sealed terminations in challenging environments.
This is a square flange receptacle intended to mate with corresponding Souriau 851 series MIL-DTL-26482 connectors. It features a straight backshell, backnut for panel mounting, and 21 solder cup contacts in a 21-cavity layout. The W orientation and 1/3 bayonet coupling simplify alignment and mating in confined spaces.
MIL-DTL-26482 SI qualification ensures interoperability with compatible connectors in aerospace and defense environments. The part is REACH compliant, addressing regulatory requirements for chemical restrictions in supply chains. For projects with additional certifications like CE or IP ratings, verify your specific program’s scope and any customer-specified approvals.
Choosing the 85100E2221PW50 delivers high-density 21-contact interconnect within a compact shell, reducing panel footprint and wiring complexity. The MIL-DTL-26482 SI qualification plus REACH compliance minimizes integration risk, while the backnut and solder cup contacts streamline installation and maintenance, delivering lower lifecycle costs and shorter downtime in critical systems.