Eaton 85100A2255P50 Receptacle - SI Qualified

Part Number: 85100A2255P50
Manufacturer
Eaton
Part number
85100A2255P50

Quick Summary

The Eaton 85100A2255P50 Receptacle provides MIL-DTL-26482 SI qualified interconnection for rugged electronics assemblies. Design teams are challenged by space constraints, vibration, and thermal drift that complicate reliable wiring in compact enclosures. MIL-DTL-26482 SI qualification ensures interoperability with compatible Souriau 851 series connectors, while REACH compliance supports regulatory requirements across global programs. The combination of a 55-contact interface and a lightweight aluminium shell translates to lower installed weight and higher channel density for aerospace, defense, and industrial automation applications.

Product Information

Extended Description

85100A2255P50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, male solder contacts, pos N; 85100A2255P50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2255P50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
54.6 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
Pin (Male)
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 → Business Impact → Application: The 85100A2255P50 uses a square flange receptacle with a straight adaptor and 1/3 bayonet coupling, enabling fast mating and secure retention in tight installations. This directly reduces assembly time on the shop floor and minimizes field rework in aircraft and heavy equipment where vibration is a constant. Application: high-density interconnects in aerospace, defense, and industrial automation where time-to-connect matters. Feature → Business Impact → Application: Cadmium plating on an aluminium shell provides corrosion resistance without sacrificing weight, boosting service life in harsh environments and lowering maintenance costs over the life of the system. Application: offshore, military, and outdoor industrial applications requiring durable finishes. Feature → Business Impact → Application: 55 loaded solder cup contacts and a 22 shell size deliver a dense, reliable electrical interface, improving channel count per assembly and reducing enclosure footprint. Application: control panels, power distribution modules, and rugged sensor networks. Feature → Business Impact → Application: Delivered with connector and N orientation backshell, installation is simplified, reducing risk of misalignment during mating. Application: turnkey installations in fielded equipment and OEM assemblies. Feature → Business Impact → Application: Operating from -40 °C to 125 °C ensures performance across extreme temperatures, supporting reliability in aerospace, automotive, and heavy industry. Application: climate-controlled and field-deployed systems that endure wide thermal swings.

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FAQs

The 85100A2255P50 is designed as a Square Flange Receptacle with an adaptor backshell that aligns with Souriau 851 series mating interfaces. It uses a 55-contact arrangement and a 1/3 Bayonet coupling for reliable fit with compatible 851 series plugs, ensuring straightforward field upgrades and consistent performance across the family.
Key specs include 55 contacts, pin (male) solder cup contacts, cadmium plating, aluminium shell, shell size 22, straight backshell, and N orientation. The connector supports a 1/3 Bayonet coupling and a receptacle configuration with a square flange, delivering a compact, high-density interconnect suitable for demanding environments.
Yes. The operating temperature range is from -40 °C to 125 °C, and the cadmium-plated aluminium shell provides corrosion resistance. The product is REACH compliant, supporting regulatory requirements in global programs and ensuring reliability in aerospace, defense, and industrial automation where temperature and environmental exposure are critical.
Consider mating with a compatible Souriau 851 series plug, use the straight backshell adaptor, and note the N orientation for correct alignment. The 55 contact arrangement requires proper tooling for solder cup terminations, and the square flange mounting provides stable, vibration-resistant seating in rugged equipment and control panels.
The connector is MIL-DTL-26482 SI qualified, providing a standardized, high-reliability interface. It also complies with REACH environmental regulations, supporting safe handling and regulatory compliance across international programs in aerospace, defense, and industrial automation.