Eaton 85100A2221SZ50 Receptacle - MIL-DTL-26482 SI qualified
Part Number: 85100A2221SZ50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified connectors provide reliable square flange receptacle solutions for aerospace and industrial use. Engineers often struggle with mating compatibility and reliable sealing under varying temperatures and vibration. Key qualifications include MIL-DTL-26482 SI qualification and REACH environmental compliance to support global deployments; the aluminium shell with cadmium plating offers robust corrosion protection in harsh environments. This combination delivers enduring performance, compatibility across legacy and new equipment, and a clear path to lower maintenance costs in demanding applications.
Product Information
Extended Description
85100A2221SZ50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos Z; 85100A2221SZ50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2221SZ50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
58.5 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
Z
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
21
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
21
Number of cavity #16
21
Feature → Business Impact → Application: The 21-contact, 21-cavity layout enables high-density interconnects in compact panels, reducing overall device footprint and wiring complexity for aerospace dashboards and industrial control panels. This improves installation efficiency and maintenance visibility, especially in space-constrained enclosures. Feature → Business Impact → Application: The straight backshell with adaptor and Z orientation simplifies field assembly and mating alignment, accelerating swap-outs and reducing downtime in serviceable equipment. Application includes avionics racks and rugged automation cabinets where quick, repeatable connections matter. Feature → Business Impact → Application: Cadmium plating on an aluminium shell provides superior corrosion resistance and thermal stability across -40 °C to 125 °C, increasing reliability in outdoor, aerospace, and heavy-industrial environments while extending service life. Feature → Business Impact → Application: 1/3 Bayonet coupling and a square flange receptacle form factor deliver robust locking and vibration resistance, minimizing intermittent connections in vibration-heavy machinery such as aircraft ground support equipment or mining automation. Feature → Business Impact → Application: Delivered with connector and loaded solder cup contacts streamline installation and reduce field labor, translating to lower total cost of ownership and faster readiness for production lines. Feature → Business Impact → Application: REACH-compliant materials and proven Souriau interconnect heritage address regulatory expectations and supply-chain risk management for global deployments in regulated industries.
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FAQs
For proper installation, align the square flange with the mating receptacle and ensure correct orientation (Z). Engage the 1/3 bayonet coupling fully until it locks, then verify contact alignment and seating. The connector is delivered loaded with solder cup contacts, simplifying pre-wiring and reducing field assembly time while preserving reliable EMI shielding and mechanical security.
The 21-position layout enables dense wiring in compact enclosures, reducing panel real estate and harness complexity. Solder cup contacts provide robust, vibration-resistant terminations suitable for aerospace and harsh industrial environments. This configuration supports streamlined field maintenance and consistent electrical performance across temperature variations.
Yes. The part is MIL-DTL-26482 SI qualified, features an aluminium shell with cadmium plating for corrosion protection, and supports a wide operating temperature range from -40 °C to 125 °C. These attributes, combined with a rigid 1/3 bayonet coupling and square flange form factor, make it well-suited for aerospace assemblies and rugged industrial equipment.
This receptacle is MIL-DTL-26482 SI qualified and REACH compliant, addressing aerospace/military performance requirements and EU environmental regulations. When sourcing for regulated programs, confirm supplier documentation for cadmium usage policies and any program-specific RoHS considerations, as cadmium plating can be a compliance point in some deployments.
The combination of high contact density, robust locking, and corrosion-resistant construction reduces downtime and refurbishment intervals. Upfront compatibility with existing MIL-DTL-26482 interconnects minimizes redesign costs, while long-term reliability lowers maintenance spend in mission-critical systems such as aircraft ground support, defense equipment, and automated industrial panels.