MS3111E8-4P Equivalent & Substitute Parts

Part Overview

The MS3111E8-4P 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 equivalent substitutes necessary for ongoing system maintenance and new procurement requirements.

Substiute Parts

MS3111E8-4P

Amphenol Industrial OperationsIn Stock: 799MS3111E8-4P Datasheet

Current PartRFQ

MSW01E8-4P

Milspecwest, LLCIn Stock: 927MSW01E8-4P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MSW01E8-4P qualifies as a functional equivalent based on the following critical parameters:

• Connector Configuration: Both parts are 4-position receptacles with male pins and bayonet lock fastening
• Shell Size: Identical 8-4 shell size and insert configuration
• Mounting: Both are free hanging (in-line) mount types
• Temperature Range: Both operate from -55°C to 125°C
• Shell Material: Both use aluminum construction
• Environmental Rating: Both provide environment resistant ingress protection
• Series Compliance: MSW01E8-4P is designated as a 26482 Style Connector, maintaining compatibility with MIL-DTL-26482 specifications

The primary difference lies in termination method: MS3111E8-4P uses solder cup termination, while MSW01E8-4P uses solder termination. Both methods are compatible for applications requiring permanent wire attachment.

Parameter Comparison

Engineering Selection Recommendations

The MSW01E8-4P serves as a direct functional substitute for the discontinued MS3111E8-4P in applications requiring MIL-DTL-26482 Series I compliance. Selection should be based on the following factors:

Product Availability: The MSW01E8-4P is currently active in inventory with 855 pieces available, whereas the MS3111E8-4P is discontinued, making the substitute the only viable option for new procurement.

Compliance Alignment: Both parts maintain RoHS non-compliant status and EAR99 ECCN classification, ensuring regulatory consistency within existing system designs.

Termination Method: The transition from solder cup to solder termination requires verification that wire attachment procedures and assembly equipment are compatible with the substitute part's termination design.

Environmental Specifications: Both connectors provide equivalent environmental resistance and operate across identical temperature ranges, supporting direct substitution in aerospace, military, and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can MSW01E8-4P directly replace MS3111E8-4P in existing assemblies?

A: Yes, provided the solder termination method is compatible with your assembly process. Both connectors share identical shell size (8-4), position count (4), fastening type (bayonet lock), and operating temperature range (-55°C to 125°C).

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 solder flow, while solder termination uses a flat or shaped contact surface for direct wire attachment. Both achieve permanent electrical connections; the choice depends on assembly equipment and process specifications.

Q: Are both parts compliant with MIL-DTL-26482?

A: MS3111E8-4P is designated as MIL-DTL-26482 Series I. MSW01E8-4P is identified as a 26482 Style Connector, maintaining compatibility with the military specification series.

Q: What is the inventory status for each part?

A: MS3111E8-4P has 746 pieces in stock but is discontinued. MSW01E8-4P is active with 855 pieces available, making it the recommended choice for ongoing procurement.

Q: Do both connectors have the same shell finish?

A: No. MS3111E8-4P features Olive Drab Chromate over Cadmium finish, while MSW01E8-4P uses Cadmium finish. Both provide corrosion resistance suitable for military and aerospace environments.

Q: Are electrical ratings specified for both parts?

A: MS3111E8-4P does not specify current or voltage ratings. MSW01E8-4P is rated for 7.5A at 800V, providing defined electrical parameters for circuit design verification.