Eaton 85100E128SY50 Receptacle - MIL-DTL-26482 SI Qualified
Part Number: 85100E128SY50
Quick Summary
Eaton Souriau 85100E128SY50 is a square flange MIL-DTL-26482 receptacle for rugged harness connections. In practice, engineers often struggle with secure mating under vibration, contamination, and tight installation space. MIL-DTL-26482 SI qualification and REACH compliance help ensure reliability in harsh environments. The aluminium shell with backnut and cadmium plating supports long service life, while 8 solder cup contacts enable fast, low-resistance connections. Designed for aerospace, automotive, and general industrial automation, it is compatible with 1/3 bayonet coupling and Y-oriented configurations, streamlining harness design and maintenance. This combination delivers predictable performance, reduced downtime, and lower total cost of ownership.
Product Information
Extended Description
85100E128SY50 Eaton: Square flange receptacle, with backnut, cadmium plating, female solder contacts, pos Y; 85100E128SY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E128SY50
Product Length/Depth
32.7 mm
Product Height
26.5 mm
Product Width
26.5 mm
Product Weight
14.7 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
Y
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Plating
Cadmium
Shell material
Aluminium
Shell size
12
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
8
Number of cavity #20
8
Feature → Business Impact → Application: The square flange receptacle with backnut and 8 solder cup contacts provides a secure, vibration-resistant connection that simplifies installation and field repair, reducing downtime in demanding environments. This translates to improved reliability in aerospace harness assemblies and industrial automation panels where space is constrained and maintenance windows are critical. Feature → Business Impact → Application: The 1/3 bayonet coupling enables rapid mating and robust retention, minimizing rework during assembly and service, ideal for on-site field replacements in aircraft wiring looms and heavy equipment. Feature → Business Impact → Application: Cadmium plating on the contacts and an aluminium shell deliver corrosion protection and weight savings, increasing service life in outdoor or salt-exposed installations such as wind turbine or mining equipment harnesses. Feature → Business Impact → Application: Operating temperature range from -40 °C to 125 °C supports consistent performance across extreme climates, enabling standardization across mixed aerospace and industrial facilities. Feature → Business Impact → Application: Backnut backshell and Y orientation support flexible mounting options and easy routing of multi-conductor cables in compact control panels, reducing design complexity and installation costs. Feature → Business Impact → Application: With eight contacts, this receptacle supports multi-line signals and power with efficient termination, streamlining harness design for automated machinery and robotics integrations.
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FAQs
The 85100E128SY50 is a square flange receptacle from the Eaton Souriau 851 series, featuring a backnut and 1/3 bayonet coupling. It ships with socket (female) solder cup contacts and supports an 8-contact configuration suitable for multi-line signal and small power applications in aerospace, defense, and industrial automation harnesses.
MIL-DTL-26482 SI qualification indicates the connector design meets a stringent military specification for performance in harsh environments. This ensures consistent electrical integrity, retention under vibration, and reliability in mission-critical assemblies, making it suitable for aerospace, defense, and rugged industrial installations.
The receptacle is rated for an operational range from -40 °C to 125 °C, providing reliable performance across extreme temperatures. This wide range supports use in both cold outdoor environments and hot, equipment-filled cabinets or enclosures.
Yes. In addition to MIL-DTL-26482 SI qualification, this receptacle is REACH compliant, reflecting attention to environmental safety in materials and manufacturing. This helps ensure regulatory alignment for European and global projects that limit hazardous substances.
The backnut backshell provides straightforward mounting and secure retention, while the 1/3 bayonet coupling enables quick mating with repeatable alignment. The eight solder cup contacts simplify field terminations, reducing assembly time and maintenance effort in complex harnesses used in aerospace, robotics, and industrial automation.