Eaton Souriau 85100AC2221S50 Receptacle - MIL-DTL-26482
Part Number: 85100AC2221S50
Quick Summary
Eaton Souriau 85100AC2221S50 is a square flange receptacle for rugged MIL-DTL-26482 assemblies. Engineers often struggle with compatibility and sealing when integrating mixed connectors in constrained or harsh environments, leading to downtime and costly field service. This solution is MIL-DTL-26482 SI qualified with REACH compliance, delivering reliable performance from -40 °C to 125 °C and featuring an aluminium shell for corrosion resistance. By pairing a 21-contact, solder-cup configuration with a straight, 1/3 bayonet backshell, it simplifies panel installation and future maintenance while supporting efficient supply chain management and standardized sourcing.
Product Information
Extended Description
85100AC2221S50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos N; 85100AC2221S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2221S50
Product Length/Depth
53 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
69.8 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
Feature: 21-contact solder-cup layout with 1/3 bayonet coupling → Business Impact: High-density signal integrity with secure, vibration-resistant mating; Application: Complex control panels and avionics enclosures where space is at a premium. The 21-contact arrangement enables dense I/O without compromising performance. Feature: Cadmium plating on the shell and aluminium construction → Business Impact: Enhanced corrosion resistance and reduced weight for long-term durability; Application: Harsh industrial environments and aerospace applications where environmental exposure is a concern. Feature: Square flange receptacle with straight backshell and adaptor → Business Impact: Simplified mounting and straightforward field wiring; Application: Front-panel or equipment backplanes with restricted access. Feature: Delivered with connector and orientation N → Business Impact: Quick, predictable installation with defined alignment; Application: Field service scenarios and OEM assembly lines. Feature: Operating temperature range -40 °C to 125 °C → Business Impact: Broad thermal tolerance reduces risk of performance degradation; Application: Automotive, industrial automation, and defense sectors. Feature: Aluminium shell size 22 and Cadmium plating → Business Impact: Strength-to-weight optimization and robust environmental protection; Application: High-vibration environments requiring durable enclosures. These attributes collectively support compliance, streamline procurement, and deliver measurable uptime improvements in demanding applications while keeping installation straightforward for technicians and engineers alike.
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FAQs
Installation begins with aligning the N-oriented adaptor and square flange receptacle to the panel cutout. Use the 1/3 bayonet coupling to secure the mating interface, then route the 21 solder cup contacts to the pre-staged harness. Ensure cadmium plating and aluminium shell are free of contaminants. Verify mechanical depth (53 mm) and fit before final torqueing or latching.
Key specs include 21 contact positions in a 21-cavity layout, solder cup contact type, cadmium plating, aluminium shell, shell size 22, and a straight backshell with adaptor. The operating temperature range is -40 °C to 125 °C, with a 1/3 bayonet coupling. The receptacle is a square flange type designed for MIL-DTL-26482 SI qualification.
Yes. The 85100AC2221S50 is MIL-DTL-26482 SI qualified and built with an aluminium shell and cadmium plating, offering robust corrosion resistance and mechanical stability in demanding environments. Its wide operating temperature range and REACH compliance further support reliability in aerospace, defense, and heavy industrial automation applications.
The product is MIL-DTL-26482 SI qualified and REACH compliant, reflecting readiness for defense, aerospace, and European regulatory environments. While other certifications such as CE or IP ratings are not listed in the data, the MIL standard qualification and REACH compliance provide strong regulatory alignment for many industrial and aerospace programs.
Maintenance benefits come from robust mechanical design, corrosion-resistant shell, and solder-cup reliability, reducing field failures and rework. The 21-contact, high-density configuration supports scalable I/O, which can lower wiring complexity and inventory costs. Expect improved uptime in vibration-prone or temperature-extreme applications and faster panel swaps during upgrades.