Eaton 85100E2221SZ50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2221SZ50
Quick Summary
Eaton 85100E2221SZ50 Receptacle delivers MIL-DTL-26482 SI qualified connectivity for rugged aerospace and industrial automation panels. In demanding environments, misalignment and corrosion can disrupt maintenance cycles and uptime. MIL-DTL-26482 SI qualification and REACH compliance help ensure reliability and regulatory peace of mind, while the square flange receptacle design supports tight panel integration. With cadmium plating, a backnut, and 21 solder cup contacts, this solution combines durability with straightforward installation, enabling repeatable assemblies and long service life in harsh conditions. This makes it a compelling choice for engineers seeking robust connectors that meet stringent industry requirements while minimizing total cost of ownership.
Product Information
Extended Description
85100E2221SZ50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos Z; 85100E2221SZ50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2221SZ50
Product Length/Depth
34.5 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
60.5 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
Z
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
MIL-DTL-26482 SI qualification provides the backbone for reliability in demanding environments. The aluminium shell with cadmium plating delivers corrosion resistance and long-term durability, while the backnut design strengthens mounting integrity and sealing against contaminants. This combination reduces rework caused by misalignment and accidental disconnects during service. Twenty-one solder cup contacts support dense wiring harnesses, improving signal integrity and traceability. The 1/3 Bayonet coupling enables quick mating with strong retention, saving installation time on assembly lines and minimizing field upgrade downtime. Designers also benefit from consistent mating force across multi-pin configurations. Z orientation and square flange receptacle geometry simplify panel cutout planning and alignment in vertical and horizontal layouts. Delivered with connector option and loaded contacts, it reduces parts handling, simplifies inventory, and speeds design-in. The cadmium-plated aluminium shell keeps weight manageable for aerospace and rugged industrial applications. Operating temperature range from -40 °C to 125 °C ensures reliable performance across extreme climates and equipment rooms. The straight backshell angle supports straightforward routing of cables and improves EMI considerations during installation. This resilience translates to fewer temperature-related failures in harsh environments. Environmental compliance with REACH supports regulatory qualification and sustainable procurement strategies. The square flange receptacle design and backnut mounting simplify field servicing and panel-level maintenance, reducing downtime and extending service intervals. Compatibility with Souriau 851-series components also aids lifecycle management and spare-part standardization. From a total-cost-of-ownership perspective, the robust construction minimizes corrosion-related maintenance and connection faults. The combination of MIL-grade qualification, reliable solder-cup contacts, and straightforward installation delivers predictable performance and faster time-to-value for aerospace and industrial automation programs.
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FAQs
Installation starts with matching the Z orientation to the mating connector, followed by aligning the 21-pin layout with the panel cutout. Secure with the backnut and ensure the 1/3 bayonet coupling is fully seated. Use proper torque on mounting hardware and verify contact delivery is loaded before final enclosure closure. This process minimizes misalignment and ensures a reliable, field-serviceable connection.
Key specs include 21 solder cup contacts in a square flange receptacle, 1/3 Bayonet coupling, cadmium plating, aluminium shell, backnut, straight backshell, and Z orientation. Operating range is -40 to 125 °C. It supports a 21-circuit layout, with loaded contacts and a 22 shell size, delivering robust mechanical and electrical performance in harsh environments.
Yes, it is designed for harsh environments and provides reliability across extreme temperatures. The operating temperature range is -40 °C to 125 °C, with aluminium shell and cadmium plating offering corrosion resistance. This combination reduces temperature-related failures and supports stable performance in aerospace and industrial automation applications.
The primary certification is MIL-DTL-26482 SI qualification, indicating military-grade compatibility and qualification. In addition, REACH compliance is noted, supporting environmental responsibility and regulatory alignment for supply chains and regulated programs. These certifications help ensure reliability, traceability, and regulatory peace of mind for OEMs and integrators.
Maintenance impact is reduced due to robust mating, corrosion resistance, and straightforward installation with a backnut backshell, which shortens service intervals and minimizes downtime. ROI is driven by lower field failures, faster design-in, and lifecycle standardization with Souriau 851-series components, enabling predictable procurement and longer component life in mission-critical programs.