Eaton 85100E2221P50 Receptacle - MIL-DTL-26482 qualified
Part Number: 85100E2221P50
Quick Summary
The Eaton 85100E2221P50 MIL-DTL-26482 SI qualified receptacle delivers rugged, high-density connectivity for aerospace and industrial systems. Panel mounting can be challenging when integrating mixed materials, but the square flange with a backnut provides stable, vibration-resistant connections. With MIL-DTL-26482 SI qualification and REACH environmental compliance, it meets stringent regulatory and industry standards while supporting long service life. Beyond reliability, the 21-pin, solder-cup layout and N-oriented receptacle streamline wiring and field servicing, delivering lower installation costs and faster maintenance.
Product Information
Extended Description
85100E2221P50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos N; 85100E2221P50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2221P50
Product Length/Depth
34.5 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
53 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
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
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 contacts in a compact 34.5 mm length and 40x40 mm footprint. Benefit: High contact density enables more signals per connector, reducing panel real estate and cabling complexity in tight industrial packages. Application: Aerospace control panels and heavy automation cabinets where space is at a premium. Feature: Solder Cup contact delivery with pin gender. Benefit: Reliable, vibration-resistant terminations suitable for rugged environments, improving long-term circuit integrity. Application: Field wiring for servo drives and sensory arrays in hostile environments. Feature: 1/3 Bayonet coupling and straight backshell. Benefit: Quick, secure mating with positive retention, simplifying installation and reducing downtime. Application: On-machine and rack-mounted assemblies requiring fast field service. Feature: Cadmium plating on an aluminium shell with shell size 22. Benefit: Corrosion resistance and lightweight strength for aerospace and industrial use, optimizing lifecycle costs. Application: Outdoor or heavily humid automation deployments. Feature: Backnut mounting and square flange receptacle design. Benefit: Stable, panel-mounted connections that withstand vibration and mechanical shocks. Application: Panel interfaces in control cabinets and equipment housings. Feature: Operating range -40 °C to 125 °C. Benefit: Broad thermal tolerance supports high-reliability operation across diverse climate zones. Application: Military, aerospace, and process automation environments. Feature: 21 cavities / 21 contact positions. Benefit: Full signal capacity in a single connector reduces interconnect count and wiring complexity. Application: Complex sensor and actuator networks in industrial automation. Feature: Aluminium shell with Cadmium Plating and 22 shell size. Benefit: Lightweight yet durable for airborne and rugged machine applications, ensuring compatibility with standard installation footprints. Application: Panel-mount harnesses and equipment housings in aerospace and defense.
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FAQs
Yes. The 85100E2221P50 is designed as a square flange receptacle with a backnut, enabling reliable panel mounting. It features a straight backshell and N orientation, and it ships delivered with the connector for straightforward installation. Confirm panel thickness and cutout per your mechanical drawings for a proper fit.
This 21-position receptacle uses solder cup contacts (Pin, Male) within a 21-cavity layout. It has an aluminium shell (Shell size 22), cadmium plating, and a 1/3 bayonet coupling. The length is 34.5 mm, with a 40x40 mm footprint, and a weight of 53 g. Operating temperature ranges from -40 °C to 125 °C.
Ideal for aerospace, defense, and rugged industrial automation where MIL-DTL-26482 SI qualification is required. The square flange receptacle with backnut and 21 solder cup contacts supports dense wiring, vibration resistance, and reliable performance in harsh environments, making it suitable for control panels, sensor networks, and actuator drives in demanding locations.
Yes. The connector is MIL-DTL-26482 SI qualified and REACH compliant, providing compliance with military specifications and environmental regulations. This combination supports regulatory readiness for aerospace and defense programs as well as industrial equipment deployments in regions with stringent environmental requirements.
The 1/3 bayonet coupling speeds mating and demating, reducing installation and maintenance time. The backnut square flange design improves vibration resistance, lowering rework from loose connections. While cadmium plating offers corrosion protection, consider cadmium-free alternatives where restricted; for long lifecycles in harsh environments, this design can improve uptime and satisfy regulatory compliance.