MS3476L22-55S Equivalent & Substitute Parts

Part Overview

The MS3476L22-55S is a 55-position circular connector plug with female sockets, designed for military and aerospace applications. This connector features crimp termination, bayonet lock fastening, and gold-plated mating contacts. The main part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and procurement.

Substiute Parts

MS3476L22-55S

TE Connectivity Deutsch ConnectorsIn Stock: 1067MS3476L22-55S Datasheet

Current PartRFQ

MS3476L22-55S

Amphenol Aerospace OperationsIn Stock: 1119MS3476L22-55S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MS3476L22-55S is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• 55-position connector configuration
• Female socket contact type
• Gold-plated mating contact finish
• Copper alloy contact material
• Crimp termination method

Mechanical Compatibility:

• Shell size 22-55 insert designation
• Aluminum shell with electroless nickel finish
• Bayonet lock fastening mechanism
• Free hanging in-line mounting orientation
• Normal (N) orientation

Environmental & Regulatory Compliance:

• Operating temperature range capability
• ROHS3 compliance
• REACH compliance status
• Military-grade qualification per MIL-DTL-26482 Series II

Substitute parts must maintain all listed parameters to ensure direct interchangeability without circuit redesign or mechanical rework.

Parameter Comparison

Engineering Selection Recommendations

The Amphenol Aerospace Operations MS3476L22-55S serves as a direct equivalent substitute for the discontinued TE Connectivity Deutsch Connectors MS3476L22-55S. Both parts share identical part numbers and maintain full electrical and mechanical compatibility across all critical parameters.

Selection Basis:

The Amphenol part maintains active product status, ensuring continued availability and supply chain reliability. Both manufacturers' versions comply with MIL-DTL-26482 Series II military specifications and ROHS3 regulatory requirements. The Amphenol variant provides an extended lower operating temperature limit (-65°C versus -55°C), offering enhanced thermal performance in cold-environment applications.

Inventory availability is comparable between both sources, with 1024 units available from Amphenol Aerospace Operations against 1013 units from TE Connectivity stock. The Amphenol part is supplied in bulk packaging format.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol MS3476L22-55S directly replace the TE Connectivity MS3476L22-55S without modification?

A: Yes. Both parts share identical electrical and mechanical specifications across all critical parameters including connector type, position count, shell size, termination method, fastening mechanism, and contact materials. Direct substitution is supported without circuit redesign or mechanical rework.

Q: What are the key compatibility criteria for this connector family?

A: Substitution requires matching the 55-position configuration, female socket contact type, 22-55 shell size designation, crimp termination, bayonet lock fastening, aluminum shell with electroless nickel finish, and gold-plated mating contacts. Operating temperature range and current rating must also align with application requirements.

Q: Does the Amphenol part meet the same military specifications?

A: Yes. The Amphenol MS3476L22-55S is qualified to MIL-DTL-26482 Series II, identical to the TE Connectivity version. Both parts maintain ROHS3 and REACH compliance status.

Q: What is the significance of the extended temperature range on the Amphenol part?

A: The Amphenol variant operates from -65°C to 200°C, compared to -55°C to 200°C for the TE Connectivity part. This provides an additional 10°C of cold-temperature capability, beneficial for aerospace and high-altitude applications where lower ambient temperatures are encountered.

Q: Are there packaging differences between the two manufacturers?

A: The Amphenol part is supplied in bulk packaging, while the TE Connectivity part packaging specification is not provided. Bulk packaging is standard for military connector procurement and does not affect electrical or mechanical performance.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These connectors can be stored and handled without special humidity controls or baking requirements prior to assembly.