Eaton 85100AC2221PZ50 Receptacle - MIL-DTL-26482 SI
Part Number: 85100AC2221PZ50
Quick Summary
The Eaton Souriau 851 series MIL-DTL-26482 SI qualified receptacle enables rugged connector assemblies for aerospace and harsh industrial environments. Engineers often contend with vibration, contamination, and tight spaces that threaten signal integrity and drive maintenance costs. This design meets MIL-DTL-26482 SI qualification and REACH compliance, while cadmium plating on an aluminum shell provides corrosion resistance in demanding settings. With a square flange receptacle, Z orientation, and 1/3 bayonet coupling, it simplifies installation, reduces field downtime, and supports high-density I/O in automation panels. This combination is well suited for aerospace avionics, rail systems, and rugged factory automation where reliability and serviceability matter.
Product Information
Extended Description
85100AC2221PZ50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, male solder contacts, pos Z; 85100AC2221PZ50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2221PZ50
Product Length/Depth
53 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
62.3 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
Z
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: The 21-contact square flange receptacle uses a 1/3 bayonet coupling to deliver high-density I/O in compact footprints. Business impact: This supports more channels per panel while preserving reliable mating under vibration, reducing enclosure size and wiring complexity in automated systems. Application: Ideal for aerospace avionics and rugged factory controls where space is at a premium and reliability matters. Feature: Cadmium plating on an aluminium shell provides robust corrosion resistance and EMI shielding. Business impact: Extends service life in harsh environments and reduces maintenance costs through fewer reworks and replacements. Application: Suitable for outdoor or high-humidity installations in industrial automation and military-grade equipment. Feature: Solder Cup contact delivery ensures direct, secure wire terminations without additional adapters. Business impact: Improves field assembly time and reduces installation errors, delivering consistent electrical performance. Application: Common in control cabinets and field wiring where quick, dependable solder connections are essential. Feature: Backshell adaptor with the connector option simplifies assembly and routing of cables. Business impact: Shortens installation time and minimizes misalignment risks during mating. Application: Works with the included connector to streamline panel integration and serviceability in retrofits and new builds. Feature: Operating temperature from -40 °C to 125 °C and REACH compliance support wide-temperature operation and regulatory alignment. Business impact: Enables reliable performance across extreme thermal cycles and meets environmental standards for aerospace, rail, and process industries. Application: Suitable for engines, compressors, and rugged automation environments where temperature swings are common. Feature: Aluminium shell size 22 with 53 mm length, 40 mm width and 40 mm height offers a compact yet sturdy form factor. Business impact: Facilitates easier panel mounting and improved ventilation in crowded control enclosures. Application: Pair with Z orientation and square flange receptacle designs for reinforced connectivity in space-constrained panels.
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FAQs
For proper installation, align the Z orientation during mating and use the 1/3 bayonet coupling to secure the connection. The adaptor backshell option aids cable routing, so plan panel layout to minimize bending radii and ensure enough clearance for the 53 mm length and 40 mm width. Use the solder cup contacts for clean, durable terminations and verify environmental seals per operator requirements.
The connector operates from -40 °C to 125 °C, maintaining electrical integrity and mechanical stability across thermal cycles. Cadmium plating on an aluminium shell provides corrosion resistance, while the 21-contact configuration supports reliable signal transmission in harsh environments. This makes it suitable for aerospace, rail, and heavy-duty industrial applications where temperature variation is routine.
Yes. It is MIL-DTL-26482 SI qualified, designed for high-reliability mating, and features a square flange receptacle with 21 solder cup contacts. The aluminium shell and cadmium plating enhance durability, while the Z orientation and 1/3 bayonet coupling simplify integration into compact, vibration-prone assemblies common in aerospace, defense, and rugged automation installations.
The 85100AC2221PZ50 is MIL-DTL-26482 SI qualified and REACH compliant, confirming suitability for stringent regulatory environments and responsible supply chain practices. The cadmium plating provides additional protection against corrosion, supporting long service life in exposed settings. Always verify your project’s exact regulatory needs against these qualifications to ensure full compliance.
The combination of MIL-DTL-26482 SI qualification, cadmium plating, and aluminium shell supports extended service life in demanding conditions, reducing maintenance cycles and replacement costs. The 21-contact configuration enables high-density I/O, which can lower panel footprint and wiring complexity. Plan preventive maintenance around connection integrity and inspect solder terminations periodically to preserve peak performance.