MS3111F8-3P Equivalent & Substitute Parts

Part Overview

The MS3111F8-3P is a 3-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 a temperature range of -55°C to 125°C. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing procurement and system maintenance.

Substiute Parts

MS3111F8-3P

Amphenol Industrial OperationsIn Stock: 1041MS3111F8-3P Datasheet

Current PartRFQ

MSW01E8-3P-SR

Milspecwest, LLCIn Stock: 1054MSW01E8-3P-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MS3111F8-3P can be substituted with the MSW01E8-3P-SR based on the following critical parameters:

• Connector Type & Pin Configuration: Both are 3-position receptacles with male pins
• Shell Size: Both use 8-3 shell size and insert configuration
• Mounting Configuration: Both feature free hanging (in-line) mounting with bayonet lock fastening
• Shell Material: Both utilize aluminum construction
• Operating Temperature Range: Both operate across -55°C to 125°C
• Ingress Protection: Both provide environment resistant protection
• Military Series Compliance: Both conform to MIL-DTL-26482 style specifications

The primary difference lies in termination method: the MS3111F8-3P uses solder cup termination, while the MSW01E8-3P-SR uses solder termination with strain relief. Both termination methods are compatible for applications requiring soldered connections.

Parameter Comparison

Engineering Selection Recommendations

The MSW01E8-3P-SR serves as a direct functional substitute for the discontinued MS3111F8-3P. Both connectors maintain identical mechanical interfaces, shell sizes, and operating temperature specifications required for military and aerospace applications.

The MSW01E8-3P-SR is currently active in production, ensuring ongoing availability for procurement and replacement applications. Both parts are RoHS non-compliant, maintaining consistency with legacy military specifications.

The primary consideration is the contact finish difference: the MS3111F8-3P features gold-plated mating contacts, while the MSW01E8-3P-SR uses cadmium finish. Additionally, the shell finish differs between olive drab chromate over cadmium and cadmium plating. These finish variations do not affect electrical compatibility but may impact corrosion resistance in specific environmental conditions.

The MSW01E8-3P-SR includes integrated strain relief, providing enhanced cable protection compared to the original design.

Frequently Asked Questions (FAQ)

Q: Can the MSW01E8-3P-SR directly replace the MS3111F8-3P in existing assemblies?

A: Yes. Both connectors share identical shell sizes (8-3), pin configurations (3-position male), mounting types (free hanging with bayonet lock), and operating temperature ranges (-55°C to 125°C). The mechanical and electrical interfaces are compatible.

Q: What is the difference in termination between these two connectors?

A: The MS3111F8-3P uses solder cup termination, while the MSW01E8-3P-SR uses solder termination with integrated strain relief. Both methods provide soldered connections suitable for permanent installations.

Q: Does the contact finish difference affect compatibility?

A: Contact finish differences (gold versus cadmium) do not affect electrical compatibility. The choice depends on environmental exposure and corrosion resistance requirements specific to the application.

Q: Are both connectors suitable for military applications?

A: Yes. Both connectors conform to MIL-DTL-26482 style specifications and are designed for military, aerospace, and industrial applications. Both are RoHS non-compliant, consistent with military procurement standards.

Q: What is the availability status of each connector?

A: The MS3111F8-3P is discontinued at DiGi Electronics. The MSW01E8-3P-SR is active in production with 1018 pieces in stock, ensuring reliable procurement for ongoing requirements.

Q: Are there any electrical rating differences?

A: The MSW01E8-3P-SR specifies current and voltage ratings (7.5A at 800V). The MS3111F8-3P does not provide published electrical ratings. Both connectors operate across the same temperature range and are suitable for the same application categories.