MS3111F8-4P Equivalent & Substitute Parts

Part Overview

The MS3111F8-4P is a 4-position circular connector receptacle manufactured by ITT Cannon, LLC, designed for cable-mounted applications with male pins and solder cup termination. This connector is part of the KPT series and maintains active product status. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and environmental specifications align with the original design requirements, enabling component interchangeability in applications where the primary part may be unavailable or inventory constraints exist.

Substiute Parts

MS3111F8-4P

ITT Cannon, LLCIn Stock: 763MS3111F8-4P Datasheet

Current PartRFQ

MSW01E8-4P-SR

Milspecwest, LLCIn Stock: 852MSW01E8-4P-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS3111F8-4P is determined by strict alignment of the following parameters:

• Connector Type & Position Count: Receptacle configuration with 4 positions
• Shell Size - Insert: 8-4 specification for mechanical fit
• Mounting Type: Free hanging (in-line) cable mount orientation
• Fastening Mechanism: Bayonet lock coupling
• Electrical Ratings: Current capacity of 7.5A minimum and voltage rating of 600VAC or higher
• Operating Temperature: -55°C to 125°C range
• Termination Method: Solder-based connection (solder cup or solder termination)
• Environmental Protection: Environment resistant classification

The substitute part MSW01E8-4P-SR meets all mandatory substitution criteria. Variations in shell finish material (cadmium vs. olive drab cadmium) and contact finish (cadmium vs. gold) represent acceptable differences within the scope of equivalent functionality for this connector category.

Parameter Comparison

Engineering Selection Recommendations

Both the MS3111F8-4P and MSW01E8-4P-SR maintain active product status and are classified as RoHS non-compliant, indicating their suitability for legacy military and aerospace applications where RoHS exemptions apply. The electrical and mechanical specifications are equivalent across both parts, with current and voltage ratings meeting or exceeding the original design requirements. The MSW01E8-4P-SR is qualified as a direct substitute based on matching shell size, position count, fastening mechanism, and operating temperature envelope. Contact finish differences (gold vs. cadmium) and shell finish variations do not preclude substitution when environmental and electrical performance requirements are the primary selection criteria.

Frequently Asked Questions (FAQ)

Q: Can MSW01E8-4P-SR be used as a direct replacement for MS3111F8-4P in existing assemblies?

A: Yes. Both connectors share identical shell size (8-4), position count (4), fastening type (bayonet lock), and operating temperature range (-55°C to 125°C). Electrical ratings are equivalent or superior. The substitute part is mechanically and electrically compatible.

Q: What is the difference in contact finish between these two parts?

A: The MS3111F8-4P features gold mating contact finish, while the MSW01E8-4P-SR uses cadmium. Both finishes provide corrosion resistance and electrical conductivity suitable for the specified voltage and current ratings. Selection between them depends on application-specific contact resistance or environmental requirements.

Q: Are there packaging differences between the main part and substitute?

A: The MS3111F8-4P is supplied without specified packaging, while the MSW01E8-4P-SR is packaged in bags. This difference affects logistics and storage but does not impact connector performance or compatibility.

Q: Do both parts meet the same environmental specifications?

A: Yes. Both connectors are rated for environment resistant ingress protection and operate across the identical temperature range of -55°C to 125°C. Both include strain relief features for cable protection.

Q: What is the significance of the shell material difference (Aluminum Alloy vs. Aluminum)?

A: Both materials provide equivalent mechanical strength and environmental protection for this connector class. The designation difference reflects manufacturer material specifications but does not affect functional compatibility or performance in the specified operating environment.