Eaton 85100AC2039SY50 Receptacle - MIL-DTL-26482
Part Number: 85100AC2039SY50
Quick Summary
Eaton 85100AC2039SY50 is a MIL-DTL-26482 SI qualified square flange receptacle for rugged aerospace and industrial connectors. Designers often struggle with ensuring reliable signal integrity and environmental resilience in harsh environments. This connector delivers sturdy solder-cup contacts in a compact 53 mm length, aluminium shell, and cadmium plating, meeting REACH compliance for modern supply chains. Ideal for high-density harnesses, its 39-contact arrangement supports complex layouts while the straight backshell and Y orientation streamline installation and field maintenance. By combining MIL-spec performance with practical installation features, this part helps reduce downtime, improve uptime, and simplify procurement through a single, robust solution for demanding programs.
Product Information
Extended Description
85100AC2039SY50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos Y; 85100AC2039SY50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2039SY50
Product Length/Depth
53 mm
Product Height
36.9 mm
Product Width
36.9 mm
Product Weight
58 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
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
Layout
39
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
39
Number of cavity #20
39
MIL-DTL-26482 SI qualified design provides MIL-spec reliability and ruggedness, ensuring consistent performance in aerospace and heavy-duty automation environments. The 39-position receptacle uses solder cup contacts for secure terminations, improving connection integrity and reducing maintenance cycles in high-vibration applications. The 1/3 bayonet coupling delivers fast, positive mating with good retention, enabling efficient field service and quick swaps during tight production windows. An aluminium shell with cadmium plating offers durable protection against environmental exposure while keeping weight to a minimum, benefiting weight-sensitive programs. The straight backshell adaptor and Y orientation enhance installation flexibility, simplifying cabinet and harness routing in compact enclosures. This high-density layout supports complex harnessing without sacrificing signal integrity or service life, delivering measurable uptime improvements and lower total cost of ownership for aerospace and industrial automation programs.
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FAQs
The 85100AC2039SY50 is a square flange receptacle that employs a 1/3 Bayonet coupling with a straight backshell adaptor and Y orientation. It is designed to pair with Souriau 851 series plug halves, enabling straightforward integration into existing 851-family harnesses and systems while supporting dense 39-contact configurations.
This receptacle operates from -40 °C to 125 °C and uses Solder Cup contacts with Socket (Female) gender. The contact delivery is loaded, ensuring reliable insertion and termination in demanding environments, making it suitable for both aerospace and industrial automation applications.
Yes. The 85100AC2039SY50 is MIL-DTL-26482 SI qualified, a standard widely required in aerospace and defense. Its 39-position, high-density layout and durable aluminium shell with cadmium plating support reliable performance in harsh environments, while the design supports integration in complex automation systems and rigorous flight hardware alike.
Key certifications include MIL-DTL-26482 SI qualification and REACH compliance for environmental safety. The product features cadmium plating and an aluminium shell, with 39 contacts arranged in a compact 53 mm length, enabling compliant, robust performance in regulated programs and modern supply chains.
Plan for careful alignment to the mating plug, leveraging the 1/3 bayonet coupling for quick, secure mating. With 39 contacts in a compact form factor and a lightweight 58 g profile, field maintenance is streamlined, reducing downtime. The combination of MIL-spec reliability and durable materials lowers maintenance costs and extends service life in mission-critical applications.