Eaton 85100A2221SX50 MIL-DTL-26482 SI qualified
Part Number: 85100A2221SX50
Quick Summary
The Eaton Souriau 85100A2221SX50 is a MIL-DTL-26482 SI qualified square flange receptacle designed for high-density, rugged connections in aerospace, defense, and industrial automation. This receptacle delivers a compact 21‑cavity interface with a straight backshell adaptor for space-constrained assemblies. Engineers often struggle with corrosion risk, mating alignment, and serviceability in harsh environments; this connector addresses those pain points with cadmium plating and a robust bayonet coupling that speeds field assembly. The 851 series is designed to resist demanding operating temperatures and REACH environmental requirements, ensuring long life in aggressive environments. By delivering with connector and X-oriented layout, it simplifies installation and inventory while supporting reliable, cost-effective maintenance.
Product Information
Extended Description
85100A2221SX50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos X; 85100A2221SX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2221SX50
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
X
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: High-density 21‑cavity interface in a square flange receptacle. Business Impact: Maximizes signal count in compact harnesses, reducing panel footprint and cabling complexity. Application: Control panels and avionics where space is at a premium. Feature: 1/3 bayonet coupling. Business Impact: Faster, vibration-resistant mating with reliable retention, lowering assembly time and field maintenance. Application: On-aircraft harnesses and rugged industrial equipment subjected to vibration. Feature: Cadmium plating on aluminium shell. Business Impact: Enhanced corrosion resistance and durability in aggressive environments, extending service life and reducing replacement costs. Application: Aerospace, automotive, and marine environments. Feature: Aluminium shell, shell size 22. Business Impact: Lightweight yet sturdy housing supports high-density layouts without adding significant weight. Application: Lightweight embedded systems and instrument panels. Feature: Straight front/backshell adaptor and X orientation. Business Impact: Flexible routing and simplified installation with predictable mating orientation. Application: Integrated harness systems with constrained routing paths. Feature: Solder Cup contact delivery, socket (female). Business Impact: Immediate integration with PCBs and wire harnesses, reducing assembly steps and risk of miswiring. Application: Electronics assemblies and field-ready connectors. Feature: REACH compliant and MIL-DTL-26482 SI qualified. Business Impact: Regulatory and industry-standard compliance reduces qualification time for programs and ensures supply continuity. Application: Contract manufacturing for aerospace and defense programs requiring strict material controls.
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FAQs
The 85100A2221SX50 is a square flange receptacle in the 851 series designed to mate with Souriau 851 series plugs. It uses a 1/3 bayonet coupling and is delivered with connector, featuring a X-oriented layout for straightforward alignment in harnesses and panel mounts.
Key specs include 21 contacts in a 21‑cavity arrangement, solder cup contact type, socket (female) contacts, aluminium shell size 22 with cadmium plating, operating temperature from -40 °C to 125 °C, and a straight backshell adaptor with a 1/3 bayonet coupling.
Yes. It is MIL-DTL-26482 SI qualified, designed for high-reliability environments typical of aerospace and defense programs, and also REACH compliant to support regulatory requirements common in those industries.
Cadmium plating provides corrosion resistance for longer service life in harsh environments, while the 1/3 bayonet coupling offers fast, repeatable mating. Delivered with connector reduces assembly steps, and the aluminium shell keeps weight low for ongoing lifecycle efficiency.
The unit uses a 21‑cavity layout with solder cup contacts in a socket (female) configuration. The receptacle is designed for a straight backshell adaptor and X orientation, enabling compact, reliable wiring in dense panel installations.