Eaton 85100E2255P50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100E2255P50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified square flange receptacle delivers reliable, high-contact density connections for aerospace and industrial equipment. Design engineers often battle tight panel space, vibration, and the need for quick, secure mating in rugged installations. This connector is MIL-DTL-26482 SI qualified, with REACH environmental compliance and cadmium plating for enhanced corrosion resistance. Backnut-based backshell, aluminium shell, and a 55-contact layout streamline installation, reduce panel cutouts, and improve uptime for aerospace, defense, or industrial automation programs. For procurement and engineering teams, this translates to lower lifecycle costs, predictable performance, and straightforward serviceability across multiple programs. Its 34.5 mm length and 40x40 mm profile support compact enclosures while maintaining robust 55-position I/O.
Product Information
Extended Description
85100E2255P50 Eaton: Square flange receptacle, with backnut, cadmium plating, male solder contacts, pos N; 85100E2255P50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100E2255P50
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
N
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 and cadmium plating. Business Impact: Ensures reliability in harsh environments and extended service life, reducing field failures and maintenance costs. Application: Suitable for aerospace, defense, and harsh-industrial applications where corrosion protection and proven compatibility are critical. Feature: 55 contact positions in a 55 cavity layout. Business Impact: Enables high-density I/O in a compact footprint, improving panel utilization and wiring efficiency. Application: Packed harnesses and multi-function modules in automation racks or avionics bays. Feature: 1/3 Bayonet coupling. Business Impact: Quick, secure mating with robust retention under vibration, decreasing assembly time and rework. Application: Harsh vibration environments common in aerospace and heavy machinery. Feature: Backnut backshell with straight orientation. Business Impact: Simplifies panel installation and sealing, reducing installation time and risk of moisture ingress. Application: Mounting on enclosures with tight tolerances. Feature: Aluminium shell, shell size 22. Business Impact: Lightweight yet strong housing improves overall system weight and handling, aiding in design optimization. Application: Portable or space-constrained equipment where weight matters. Feature: Solder Cup contact delivery and Pin (Male). Business Impact: Reliable solder connections with durable terminations, minimizing service needs. Application: Cable harness terminations in rugged environments. Feature: Operating temperature -40 to 125 °C. Business Impact: Wide operating range supports aircraft, industrial, and defense platforms in extreme climates. Application: Systems exposed to temperature variations. Feature: Delivered with connector and orientation N. Business Impact: Reduces procurement complexity and ensures correct mating orientation during assembly. Application: Quick installation in mid- or high-volume assembly lines.
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FAQs
The 85100E2255P50 is a square flange receptacle with a backnut backshell and 55 contacts, designed for MIL-DTL-26482 compatibility. It uses a 1/3 Bayonet coupling and male solder cup contacts, oriented N, to ensure secure mating and straightforward installation in aerospace and industrial panels. Plan for a compatible 55-pin cavity layout and proper panel cutouts to maximize reliability in vibration-prone environments.
It supports 55 contacts in a 55-cavity layout, with a 1/3 bayonet coupling for quick, vibration-resistant mating. The contact type is Solder Cup with Pin (Male) delivery, allowing robust solder terminations. This configuration suits high-density I/O needs while keeping connector dimensions compact for tight installations.
Yes. The Eaton Souriau 85100E2255P50 is MIL-DTL-26482 SI qualified, cadmium-plated for corrosion protection, and rated for -40 to 125 °C. Its aluminium shell, backnut backshell, and straight receptacle orientation provide dependable performance in aerospace, defense, and rugged industrial automation applications where reliability and environmental compliance are essential.
The part is MIL-DTL-26482 SI qualified and REACH compliant, with cadmium plating as specified. This combination supports high-reliability, regulator-aligned usage in aerospace and industrial contexts, while meeting environmental and corrosion-protection expectations common in critical systems.
The 85100E2255P50 offers a high-density 55-pin interface with a backnut backshell for easier installation and sealing, reducing commissioning time. The robust MIL qualification and corrosion protection help minimize field failures and maintenance costs, delivering predictable performance and lower lifecycle total cost over multi-year programs in aerospace and industrial automation.