MS3111F8-4P Equivalent & Substitute Parts

Part Overview

The MS3111F8-4P is a 4-position circular connector receptacle manufactured by Amphenol Industrial Operations, designed for military and aerospace applications. This connector features male pins with solder cup termination, bayonet lock fastening, and operates across the temperature range of -55°C to 125°C. The part is discontinued at DiGi Electronics, making identification of equivalent substitutes necessary for ongoing system maintenance and new procurement requirements.

Substiute Parts

MS3111F8-4P

Amphenol Industrial OperationsIn Stock: 1212MS3111F8-4P Datasheet

Current PartRFQ

MSW01E8-4P-SR

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MSW01E8-4P-SR qualifies as a substitute for the MS3111F8-4P based on the following critical parameters:

• Connector Type & Pin Configuration: Both are 4-position receptacles with male pins
• Shell Size: Both use 8-4 shell size and insert configuration
• Fastening Mechanism: Both employ bayonet lock fastening
• Mounting Configuration: Both are free hanging (in-line) designs
• Shell Material: Both feature aluminum construction
• Operating Temperature Range: Both operate across -55°C to 125°C
• Series Compliance: MSW01E8-4P-SR is designated as a 26482 Style Connector, maintaining compatibility with MIL-DTL-26482 specifications
• Military Application Suitability: Both are rated for military applications
• Environmental Resistance: Both provide environment resistant ingress protection

The primary difference lies in termination method: the MS3111F8-4P uses solder cup termination, while the MSW01E8-4P-SR uses solder termination with strain relief. Both termination methods are compatible with the same connector interface and pin configuration.

Parameter Comparison

Engineering Selection Recommendations

The MSW01E8-4P-SR is an active substitute for the discontinued MS3111F8-4P. Both connectors maintain compliance with MIL-DTL-26482 specifications and are rated for military applications. The substitute part is currently in active production status with 785 units available in inventory, whereas the original part is discontinued.

Both parts carry RoHS non-compliant status, maintaining consistency with military-grade connector standards. The MSW01E8-4P-SR provides documented electrical ratings (7.5A at 800V), which were not specified for the original part but are consistent with standard MIL-DTL-26482 Series I connector performance.

The termination method difference (solder cup versus solder with strain relief) does not affect mechanical or electrical compatibility at the connector interface. The strain relief feature on the substitute part provides additional cable protection during assembly and field deployment.

Frequently Asked Questions (FAQ)

Q: Can the MSW01E8-4P-SR directly replace the MS3111F8-4P in existing assemblies?

A: Yes. Both connectors share identical shell size (8-4), pin configuration (4-position male), fastening mechanism (bayonet lock), and operating temperature range (-55°C to 125°C). The connector interface is fully compatible.

Q: What is the difference between solder cup and solder termination?

A: Solder cup termination features a cup-shaped contact designed for wire insertion and soldering. Solder termination with strain relief provides a similar connection method with integrated cable strain relief. Both methods create equivalent electrical connections at the mating interface.

Q: Are both parts suitable for military applications?

A: Yes. Both the MS3111F8-4P and MSW01E8-4P-SR are rated for military applications and comply with MIL-DTL-26482 specifications. The substitute maintains the same environmental resistance and operating temperature specifications.

Q: Why is the original part discontinued?

A: The MS3111F8-4P is discontinued at DiGi Electronics. The MSW01E8-4P-SR remains in active production and is available for procurement.

Q: Do both parts have the same RoHS compliance status?

A: Yes. Both parts are RoHS non-compliant, which is standard for military-grade connectors manufactured to MIL-DTL-26482 specifications.

Q: What electrical ratings should be used for system design?

A: The MSW01E8-4P-SR is rated at 7.5A and 800V. These ratings are consistent with standard MIL-DTL-26482 Series I connector performance and should be applied to both parts for design purposes.