Eaton 85100AC2027S50 Receptacle - MIL-DTL-26482 SI
Part Number: 85100AC2027S50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified connectors enable rugged interconnects for aerospace and industrial equipment. Design engineers often struggle to maintain mating integrity and environmental protection in tight-panel installations. These assemblies meet MIL-DTL-26482 SI qualification and REACH compliance, delivering reliable performance under harsh conditions. With a square flange receptacle, cadmium-plated aluminium shell, and a 1/3 bayonet coupling, they simplify panel installation, reduce weight, and support solder-cup contacts for fast terminations. This combination translates to lower field failures and predictable maintenance budgets across demanding applications in aerospace, defense, and advanced manufacturing.
Product Information
Extended Description
85100AC2027S50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos N; 85100AC2027S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2027S50
Product Length/Depth
53 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
53.3 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
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
27
Plating
Cadmium
Shell material
Aluminium
Shell size
20
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
27
Number of cavity #20
27
The 85100AC2027S50 uses a 27-position, solder-cup contact layout within an aluminium shell sized to 20, maximizing signal density in compact panel spaces. Business impact: higher channel count in a smaller footprint reduces panel real estate and wiring complexity, speeding assembly and test. Application: avionics consoles, robotic control panels, and industrial automation racks benefit from the dense 27-cavity arrangement without compromising overall reliability. The straight backshell with adaptor and a 1/3 bayonet coupling delivers quick, vibration-resistant mating, cutting upgrade downtime and improving maintenance predictability. The cadmium plating provides corrosion resistance in harsh environments, while REACH compliance addresses modern environmental requirements and supplier responsibility. The N orientation and loaded contacts ensure consistent, plug-and-play terminations for wire-terminated or PCB configurations, supporting streamlined spares management and lifecycle planning.
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FAQs
To install the 85100AC2027S50, align the square flange receptacle with the panel cutout designed for a 20-shell size and secure using the provided mounting holes. Use the 1/3 bayonet coupling to mate with the corresponding plug, ensuring the backshell adaptor is correctly oriented (straight). Terminate the 27 solder cup contacts per your harness or PCB layout; confirm that contact delivery is loaded for a reliable connection and vibration resistance.
This connector features 27 solder cup contacts in a 27-cavity layout, aluminium shell size 20, cadmium plating, and a straight backshell with adaptor. It uses a 1/3 bayonet coupling, has a square flange receptacle design, and supports a -40 °C to 125 °C operating range. Orientation is N, with contact delivery loaded, enabling quick, repeatable assembly in aerospace and industrial applications.
Yes. The 85100AC2027S50 is MIL-DTL-26482 SI qualified and REACH compliant, making it suitable for aerospace, defense, and robust industrial automation where high mating integrity, vibration resistance, and environmental protection are critical. Its compact 27-position arrangement, cadmium-plated aluminium shell, and straightforward bayonet coupling support reliable performance in harsh installations like avionics panels and robotics cabinets.
The key certification context for this connector is MIL-DTL-26482 SI qualification, which ensures military-grade reliability for critical applications. REACH compliance supports European regulatory expectations for chemical safety. While cadmium plating offers corrosion resistance, confirm your project’s cadmium policy, as some programs restrict cadmium usage. Together, these factors help meet aircraft, defense, and industrial procurement standards.
Plan for periodic inspection of the 27 solder cup terminations and mating interfaces to detect wear, corrosion, or contamination. The aluminium shell and cadmium plating provide corrosion resistance, but surface integrity should be preserved with appropriate cleaning and handling procedures. The compact 53 mm depth and 36.9 mm width help minimize cabinet rework, while the 1/3 bayonet coupling supports reliable mating cycles and simplified replacement in field upgrades.