MS3111F8-2P Equivalent & Substitute Parts

Part Overview

The MS3111F8-2P is a 2-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 equivalent substitutes necessary for ongoing system maintenance and new procurement requirements.

Substiute Parts

MS3111F8-2P

Amphenol Industrial OperationsIn Stock: 1181MS3111F8-2P Datasheet

Current PartRFQ

MSW01E8-2P-SR

Milspecwest, LLCIn Stock: 960MSW01E8-2P-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MS3111F8-2P is determined by strict alignment of the following critical parameters:

• Connector Configuration: 2-position receptacle with male pins
• Shell Size: 8-2 insert designation
• Fastening Mechanism: Bayonet lock coupling
• Termination Method: Solder-based connection (solder cup or solder termination)
• Mounting Style: Free hanging, in-line configuration
• Operating Temperature Range: -55°C to 125°C minimum
• Shell Material: Aluminum construction
• Series Compliance: MIL-DTL-26482 style connectors

The MSW01E8-2P-SR meets all critical substitution criteria. While minor differences exist in shell finish specification and contact finish material, the functional and mechanical compatibility remains within acceptable parameters for direct substitution in applications requiring MIL-DTL-26482 style 2-position circular connectors.

Parameter Comparison

Engineering Selection Recommendations

The MSW01E8-2P-SR serves as a direct functional equivalent for the discontinued MS3111F8-2P. Both connectors maintain identical mechanical interfaces, electrical pin configurations, and environmental operating specifications. The substitute part is currently active in production, ensuring availability for procurement and system support.

Both parts carry RoHS non-compliant status, consistent with military-grade connector specifications. The MSW01E8-2P-SR provides specified electrical ratings (7.5A at 800V), which exceed typical requirements for 2-position military circular connectors in this size class.

Selection between these parts should be based on procurement availability, lead time requirements, and existing inventory management protocols. The mechanical and functional compatibility is established through adherence to MIL-DTL-26482 style specifications.

Frequently Asked Questions (FAQ)

Q: Can the MSW01E8-2P-SR directly replace the MS3111F8-2P in existing assemblies?

A: Yes. Both connectors share identical shell size (8-2), pin configuration (2-position male), fastening mechanism (bayonet lock), and operating temperature range (-55°C to 125°C). The mechanical interface and electrical connectivity are compatible for direct substitution.

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

A: Both termination methods establish electrical connections through solder joints. Solder cup termination uses a cup-shaped contact designed to accept wire leads, while solder termination refers to the general soldering process. Both methods are functionally equivalent for this connector class.

Q: Are there any compliance differences between the two parts?

A: Both parts are RoHS non-compliant and carry ECCN EAR99 classification, consistent with military connector specifications. No compliance divergence exists between the main part and substitute.

Q: What is the significance of the 26482 style designation?

A: MIL-DTL-26482 is the military specification governing circular connector design and performance. Both the MS3111F8-2P (Series I) and MSW01E8-2P-SR (26482 Style) conform to this specification, ensuring mechanical and electrical interchangeability within the defined parameters.

Q: Does the MSW01E8-2P-SR include strain relief?

A: Yes. The MSW01E8-2P-SR includes strain relief as a standard feature, providing additional mechanical protection at the cable interface compared to the base MS3111F8-2P specification.