Eaton 85100AC2221SX50 Receptacle - MIL-DTL-26482
Part Number: 85100AC2221SX50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified square flange receptacle is a rugged, high-density connector designed for harsh environments. Designers often struggle with reliable mating in tight spaces, maintaining electrical continuity under vibration, and simplifying panel integration in complex systems. This family earns MIL-DTL-26482 SI qualification for severe service, supports REACH environmental compliance, and is built from aluminium with cadmium plating for corrosion resistance. By leveraging a 21-contact layout and a straight backshell adaptor, it enables faster installation, safer maintenance, and longer system lifecycles in aerospace, defense, and demanding industrial automation applications.
Product Information
Extended Description
85100AC2221SX50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos X; 85100AC2221SX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2221SX50
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
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 → Business Impact → Application: The 21-contact arrangement delivers high power and signal density in a compact form, reducing panel area and hardware costs while improving reliability in vibration-prone environments. This translates to predictable performance in automated machinery and avionics, with fewer connectors to manage and easier diagnostics when issues arise. Feature → Business Impact → Application: Cadmium plating on an aluminium shell provides enhanced corrosion protection in challenging environments, lowering maintenance costs and extending service intervals for outdoor or coastal installations. Feature → Business Impact → Application: The 1/3 Bayonet coupling supports quick mating and secure retention, speeding assembly and reducing downtime during field wiring and servicing in manufacturing cells and on-aircraft ground equipment. Feature → Business Impact → Application: Solder Cup contacts on a socket (female) configuration ensure robust, corrosion-resistant terminations compatible with common harness practices, enabling repeatable performance across production lines and maintenance shops. Feature → Business Impact → Application: The square flange receptacle with a straight backshell option and a delivered-with-connector configuration simplifies mounting, improves sealing arrangements, and reduces the risk of misalignment during panel assembly in control panels and aircraft systems. Feature → Business Impact → Application: Operating temperature range from -40 °C to 125 °C supports mission-critical equipment in extreme environments, providing confidence for both aerospace and industrial automation deployments. Feature → Business Impact → Application: The 53 mm length and 40 mm width with a 40 mm height profile balance enclosure clearance against mounting constraints, enabling compatibility with compact equipment racks and ruggedized control panels while preserving useful cavity layout. Feature → Business Impact → Application: 21 cavities with 1/3 Bayonet layout aligns with Souriau 851-series ecosystems, assuring compatibility with existing connectors, backshell accessories, and field repair strategies in production facilities and field service programs.
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FAQs
The 85100AC2221SX50 uses a 1/3 Bayonet coupling for quick, secure mating and mates with Souriau 851-series backshells and harness assemblies. Its straight backshell orientation and delivered-with-connector option simplify field installation, ensuring compatibility with common Souriau accessory lines while preserving alignment and seal integrity in tight panel spaces.
This receptacle supports an operating temperature range from -40 °C to 125 °C, making it suitable for extreme environments found in aerospace and industrial automation. It carries REACH environmental compliance, and cadmium plating provides corrosion resistance for outdoor or harsh industrial settings, helping to extend component life and reduce maintenance cycles.
The assembly provides 21 contacts in a socket (female) configuration with Solder Cup termination. The 21-position layout matches the model's 21 cavities, enabling dense wiring with reliable solder terminations, and supports robust performance in vibration-prone equipment such as control systems and avionics racks.
Yes. The Eaton Souriau 851 series is MIL-DTL-26482 SI qualified, designed for aerospace and defense applications, while also meeting demanding industrial automation requirements. Its aluminium shell, cadmium plating, high-temperature tolerance, and compact 21-cavity footprint enable durable, compliant connectivity across both flight-critical systems and rugged manufacturing environments.
The straight backshell adaptor, delivered-with-connector option, and 1/3 Bayonet coupling streamline panel mounting and mating procedures, reducing installation time and risk of misalignment. The cadmium-plated aluminium shell provides rugged protection, while the 21-contact configuration supports efficient wiring management and easier field servicing in high-density control panels and aircraft systems.