Eaton 85100A2255SY50 MIL-DTL-26482 Receptacle SI Qualified
Part Number: 85100A2255SY50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified receptacle provides robust, field-ready connections for rugged industrial and aerospace harnessing. Engineers often grapple with mixed contact types, corrosion risks, and insufficient environmental protection in MIL-DTL-26482 assemblies. This family is MIL-DTL-26482 SI-qualified and REACH compliant, with cadmium plating and an aluminum shell to meet harsh-environment specs. Leveraging a straight adaptor and Y-oriented backshell, designers gain faster installation, traceability, and longer service life across critical automation and defense applications. The design supports high contact density while simplifying panel integration, delivering measurable improvements in reliability and total cost of ownership.
Product Information
Extended Description
85100A2255SY50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos Y; 85100A2255SY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2255SY50
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
Y
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
55
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
55
Number of cavity #20
55
Feature: MIL-DTL-26482 SI qualification ensures mission-ready reliability in critical environments. Business Impact: Reduces risk of connector failure in harsh conditions, supporting compliant assemblies and uptime targets. Application: Aerospace, defense, and industrial automation harnesses. Feature: 55 contacts with Solder Cup contacts and Socket (Female) configuration. Business Impact: Enables high-density signal and power routing with a secure, soldered connection, improving mating integrity and electrical performance. Application: High-density control panels and instrumentation harnesses. Feature: Cadmium plating on an Aluminium shell. Business Impact: Offers corrosion resistance and lightweight strength, lowering maintenance needs and weight in mobile equipment. Application: Outdoor or industrial environments with exposure to contaminants. Feature: Backshell adaptor with Straight backshell and Connector orientation Y. Business Impact: Simplifies installation in limited spaces and ensures correct mating orientation, reducing field retrofit time. Application: Panel-mounted assemblies and avionics racks. Feature: 1/3 Bayonet coupling and 22 Shell size, 44 mm length, 40 mm width/height. Business Impact: Fast, secure engagement with repeatable alignment and compact footprint, improving fit in tight enclosures. Application: Front-panel connectors on control cabinets and equipment housings. Feature: Operating temperature range -40 to 125 °C. Business Impact: Maintains performance across extreme temperatures, minimizing thermal failures and warranty costs. Application: Environments with wide thermal cycling such as manufacturing floors and airborne platforms. Feature: Delivered with connector option. Business Impact: Reduces configuration steps and lead times during installation, accelerating time-to-value for systems integrators. Application: Systems integration projects and field installations.
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FAQs
The 85100A2255SY50 arrives with a straight backshell adaptor and a Y-oriented connector arrangement, featuring a 1/3 bayonet coupling for quick, secure mating. The 55-contact, socket (female) solder-cup design fits the square flange receptacle format (shell size 22) and is compatible with standard Eaton Souriau 851-series accessories, simplifying panel integration and field servicing.
This receptacle provides 55 contacts with solder-cup terminals in a square flange configuration. It operates from -40 °C to 125 °C and uses a cadmium plating on an aluminium shell to enhance corrosion resistance. The packaging supports loaded contact delivery and a high-density layout suitable for demanding automation and avionics applications.
Yes. The 85100A2255SY50 is MIL-DTL-26482 SI qualified, designed for high-reliability environments typical in aerospace and defense, while also serving demanding industrial Automation environments. Its 44 mm depth and 40x40 mm footprint fit compact panel layouts, and the Y orientation supports versatile harness routing.
In addition to MIL-DTL-26482 SI qualification, the product aligns with REACH environmental requirements. The cadmium plating provides corrosion resistance while the aluminium shell contributes to weight reduction, supporting regulatory and safety considerations in modern European and global programs.
The combination of a robust aluminium shell, cadmium plating, and a 55-contact solder-cup interface delivers durable, low-maintenance performance in harsh environments. The straight adaptor with Y orientation simplifies installation, reduces field retrofit time, and improves long-term reliability, contributing to lower lifecycle costs and higher uptime for critical systems.