Eaton 85100E2255PX50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2255PX50
Quick Summary
Eaton 85100E2255PX50 Receptacle is a MIL-DTL-26482 SI qualified connector for rugged, high-reliability assemblies. Engineers often face challenges securing a compatible backshell, reliable solder cup contacts, and consistent performance in harsh environments. This part highlights MIL-DTL-26482 SI qualification and REACH compliance, delivering robust standards alignment and traceable manufacturing quality. By leveraging cadmium plating and an aluminium shell, the solution reduces maintenance cycles and improves uptime, supporting high-mix, low-volume production in aerospace, defense, and heavy industry. The result is a dependable, scalable connectivity option that simplifies design-in, supplier sourcing, and long-term service planning across demanding applications.
Product Information
Extended Description
85100E2255PX50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos X; 85100E2255PX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2255PX50
Product Length/Depth
34.5 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
56.6 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Backnut
Connector accessory option
Delivered with connector
Connector orientation
X
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Pin (Male)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
55
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
55
Number of cavity #20
55
Feature: MIL-DTL-26482 SI qualification provides a proven rugged interface that withstands shock, vibration, and harsh environmental conditions. Business Impact: Reduced field failures and fewer rework cycles, improving overall system uptime and lowering lifecycle costs. Application: Ideal for aerospace and defense enclosures where reliability is non-negotiable and regulatory traceability is required. Feature: 55 contacts in a compact 34.5 mm depth with a 1/3 bayonet coupling and solder cup contacts. Business Impact: High contact density enables more complex signal wiring while preserving panel space and reducing assembly time. Application: Useful in equipment where space is tight and fast mating is essential for maintenance windows. Feature: Cadmium plating on an aluminium shell with a backnut backshell configuration. Business Impact: Enhanced corrosion resistance and EMI shielding in outdoor or rugged facilities, extending service life and reducing maintenance. Application: Suitable for coastal installations and high-dust environments. Feature: Square flange receptacle with X orientation and pre-delivered connector. Business Impact: Simplified installation and alignment, lowering commissioning risk and improving first-pass mating reliability. Application: Great for standardized panel layouts and modular system designs. Feature: Operating temperature range from -40 °C to 125 °C. Business Impact: Maintains electrical performance across extreme climates, reducing the need for alternative solutions. Application: Deployable in cold starts and hot environments typical of aerospace and industrial plants. Feature: 55 cavities, cadmium plating, and straight backshell with backnut. Business Impact: Predictable mating and robust sealing against contaminants, improving product lifecycle resilience. Application: Long-life deployments in harsh environments where maintainability is essential.
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FAQs
This square flange receptacle uses a backnut and straight backshell with a pre-delivered connector. Ensure the panel cutout matches the 40 mm width/height and the 34.5 mm depth, align the X orientation, and secure with recommended torque on the backnut. The solder cup contacts are male and require proper insulation and flux management during crimp-free soldering for reliable long-term performance.
MIL-DTL-26482 SI qualification indicates suitability for high-reliability, rugged environments with strict electrical and mechanical performance. For this receptacle, it includes 55 contacts, 1/3 bayonet coupling, cadmium plating, aluminium shell, and a temperature range of -40 °C to 125 °C, supporting stable operation under vibration, shock, and extreme temperatures.
Yes. The part is MIL-DTL-26482 SI qualified, designed for demanding aerospace and defense applications, with features like a cadmium-plated aluminium shell, backnut backshell, and solder cup contacts. Its high-contact-density layout and robust mating mechanism help maintain signal integrity and reliability in mission-critical systems.
The product supports REACH compliance, addressing environmental impact and chemical use. Its cadmium plating is a traditional corrosion-resistant option; if cadmium restrictions apply in your program, verify the availability of cadmium-free alternatives or planned substitutions with the supplier.
The pre-delivered, loaded solder cup contacts and quick 1/3 bayonet mating reduce assembly time and field maintenance costs. The robust MIL-DTL-26482 SI qualification and wide operating temperature range lower failure rates, extending service life and yielding lower total cost of ownership in aerospace, defense, and rugged industrial deployments.