Eaton 85100E2027PW50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2027PW50
Quick Summary
Eaton 85100E2027PW50 Receptacle enables rugged MIL-DTL-26482 square-flange interconnects for aerospace and industrial systems. Design teams often struggle with achieving mating reliability, vibration resistance, and field serviceability in harsh environments. MIL-DTL-26482 SI qualified and REACH compliant provide clear validation of performance and regulatory alignment. The 27-contact layout with a backnut-based aluminium shell supports reliable installs, reducing maintenance cycles and lifecycle costs in critical programs. Cadmium plating adds durability in controlled settings, while documented compatibility with the Eaton Souriau 851 series simplifies upgrade paths. Its compact depth and shared design language make it a scalable solution for aerospace, defense, and industrial automation projects.
Product Information
Extended Description
85100E2027PW50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos W; 85100E2027PW50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2027PW50
Product Length/Depth
34.5 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
41.9 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
W
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Pin (Male)
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 27-contact arrangement delivers high-density interconnect capability, enabling designers to consolidate power and signal paths within a compact 34.5 mm depth and 36.9 mm width, which reduces panel footprint and wiring complexity. This directly translates to lower harness lengths, simplified routing, and measurable cost savings during assembly and field maintenance. The 1/3 bayonet coupling provides a secure, vibration-resistant mating that is quick to engage and easy to verify in the field, improving install accuracy and reducing rework in rugged environments. With an aluminium shell and cadmium plating, the component offers a strong balance of mechanical protection and electrical performance while keeping weight manageable for airborne or mobile platforms. The backnut-backed backshell design enhances EMI/RFI shielding and simplifies panel mounting, enabling faster installation and stronger long-term reliability. Delivered with connector options and a W orientation, this receptacle is compatible with a broad range of mating halves in the 851-series ecosystem, ensuring a smooth upgrade path and predictable maintenance planning. The operating temperature range from -40 °C to 125 °C supports use in extreme climates, from cold start in cold weather to high-temperature operation in engine bays or industrial facilities. The 27-contact, 20-shell-size configuration is designed for robust current and signal handling while maintaining a compact footprint, helping meet strict aerospace and defense standards without sacrificing ease of service. Overall, the design integrates well with existing Souriau 851 components, reducing qualification time and accelerating time-to-flight or time-to-production for complex assemblies.
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FAQs
Begin with confirming the backnut-style backshell and square flange mounting pattern to match the panel. Align the W orientation, engage the 1/3 bayonet coupling firmly, and verify the connector is fully mated before tightening. The backnut design helps maintain EMI performance and resist loosening under vibration, while the 27-contact arrangement provides a dense, reliable connection for complex harnesses.
Key specs include 27 solder cup contacts, aluminium shell size 20, cadmium plating, and a wide operating temperature range of -40 °C to 125 °C. The MIL-DTL-26482 SI qualification ensures rugged interconnect performance, while the backnut backshell supports EMI/RFI shielding and durable field installation in aerospace assemblies.
Yes. The receptacle is REACH compliant, aligning with environmental and regulatory requirements. Documentation such as the C08851A drawings and the 851-series specifications provide installation details, materials, and compliance information, helping engineers validate suitability for regulated applications and supplier qualification processes.
The product is MIL-DTL-26482 SI qualified and REACH compliant, reflecting both military interconnect standards and environmental compliance. Additional references include the official drawings (C08851A.pdf) and the 851-series product specifications, which support QA reviews, design approvals, and correct assembly practices in regulated programs.
The high-density 27-contact layout reduces panel space and wiring complexity, cutting harness length and installation time. The robust design with vibration resistance and wide temperature tolerance lowers maintenance frequency and risk of field failures, delivering lower lifecycle costs and improved uptime for defense, aerospace, and industrial automation programs.