Eaton 85100A2221PY50 Receptacle - MIL-DTL-26482 SI
Part Number: 85100A2221PY50
Quick Summary
Eaton 85100A2221PY50 receptacle provides reliable MIL-DTL-26482 connections for aerospace and defense wiring harness applications. Engineers often struggle with vibration resistance, secure contact engagement, and reliable mating in tight enclosures. It is MIL-DTL-26482 SI qualified and REACH compliant, featuring a cadmium-plated aluminium shell that resists corrosion and reduces weight. The 21-position layout and Y-backshell orientation simplify routing and field service, while straightforward solder cup contacts support quick assembly. This solution helps sustain high-performance systems under temperature extremes and operational stress, delivering predictable performance in mission-critical environments. For procurement teams, the combination of standard compliance, rugged build, and compact footprint translates to lower lifecycle risk and improved uptime.
Product Information
Extended Description
85100A2221PY50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, male solder contacts, pos Y; 85100A2221PY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2221PY50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
51 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
Y
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 and 21-contact configuration. Business Impact: Ensures compatibility with strict military-aerospace standards and supports high channel density in a single connector. Application: Ideal for complex aircraft and defense harnesses where reliable, standardized performance is critical. Feature: Cadmium plating on an aluminium shell. Business Impact: Provides corrosion resistance while keeping weight to a minimum, improving overall system reliability in harsh environments. Application: Suitable for coastal or high-humidity installations and outdoor equipment. Feature: Backshell adaptor with straight orientation and Y connector alignment. Business Impact: Eases panel mounting and harness routing, reducing assembly time and field errors. Application: Panels with limited depth or tight service envelopes in aerospace and industrial equipment. Feature: 1/3 bayonet coupling and 21‑cavity layout (Pin contacts, Solder Cup). Business Impact: Delivers fast mating, robust vibration resistance, and reliable solder connections, lowering maintenance intervals. Application: High-vibration aerospace and military platforms where quick connect/disconnect is valuable. Feature: Temperature range from -40 °C to 125 °C. Business Impact: Supports operation across extreme climates without performance loss, reducing thermal management concerns. Application: Aircraft, ground vehicles, and rugged industrial machinery. Feature: Square flange receptacle with high-density shell size 22. Business Impact: Compact footprint enables more compact assemblies and easier integration into tight enclosures. Application: Modern avionics and weapon-system cabling where space is at a premium.
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FAQs
Begin with a suitable panel cutout to accept the square flange receptacle. Align the Backshell adaptor with the straight orientation and Y alignment, then mate the receptacle to its mating connector using the 1/3 bayonet coupling. Ensure the solder cup contacts are properly seated and soldered, and verify the pin contacts are fully loaded. Finally, secure the assembly and test for continuity and vibration stability to confirm a robust, field-ready connection.
The 85100A2221PY50 features 21 solder cup contacts with a pin (Male) contact type inside a square flange receptacle. It uses cadmium plating on an aluminium shell and operates from -40 °C to 125 °C. It is designed to meet MIL-DTL-26482 SI qualification and complies with REACH environmental standards, making it suitable for aerospace, defense, and harsh industrial environments.
Yes. It is specifically designed for high-reliability applications, with MIL-DTL-26482 SI qualification, a high-density 21-contact layout, and rugged construction (cadmium-plated aluminium shell). The Y orientation and adaptor backshell support easier integration into aircraft and military systems, while the temperature range ensures operation across extreme conditions.
The connector is MIL-DTL-26482 SI qualified, reflecting compliance with stringent military/aerospace interface requirements. It also adheres to REACH environmental standards. While not listing CE/IP ratings in the provided data, the MIL-DTL-26482 qualification and REACH compliance are key indicators of its regulatory alignment for defense and aerospace programs.
The 85100A2221PY50 delivers high reliability through rugged construction, vibration-resistant mating, and corrosion resistance from cadmium plating, which reduces field failures and maintenance intervals. The 21-contact density supports complex harness architectures in a single connector, simplifying sourcing and inventory. Over the product lifecycle, this can lower total cost of ownership by reducing downtime, service time, and procurement risk.