MS3111E8-3P Equivalent & Substitute Parts

Part Overview

The MS3111E8-3P is a 3-position circular connector receptacle manufactured by ITT Cannon, LLC, designed for cable-mount applications in military and industrial environments. 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 currently active in production with 1052 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part is unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

MS3111E8-3P

ITT Cannon, LLCIn Stock: 1107MS3111E8-3P Datasheet

Current PartRFQ

MSW01E8-3P

Milspecwest, LLCIn Stock: 749MSW01E8-3P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS3111E8-3P is determined by strict alignment of the following critical parameters:

Electrical Compatibility:

• Connector type must be receptacle with male pins
• Number of positions must equal 3
• Shell size designation must be 8-3
• Current rating must support minimum 7.5A
• Voltage rating must support minimum 600VAC or 850VDC

Mechanical Compatibility:

• Mounting type must be free hanging (in-line) cable mount
• Fastening type must be bayonet lock
• Termination method must be solder-based (solder cup or solder acceptable)
• Operating temperature range must encompass -55°C to 125°C

Material & Environmental:

• Shell material must be aluminum or aluminum alloy
• Ingress protection must be environment resistant
• RoHS compliance status is noted but does not preclude substitution

The MSW01E8-3P meets all critical substitution criteria and is classified as an equivalent substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both the MS3111E8-3P and MSW01E8-3P are active production parts with equivalent electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Primary Part (MS3111E8-3P):

• Preferred when gold contact finish is required for enhanced corrosion resistance and signal integrity
• Recommended for applications requiring ITT Cannon manufacturing certification
• Current inventory: 1052 units

Substitute Part (MSW01E8-3P):

• Acceptable alternative when cadmium contact finish meets application requirements
• Suitable for military applications per 26482 style connector specification
• Current inventory: 709 units
• Manufactured by Milspecwest, LLC under equivalent military standards

Both parts maintain identical electrical ratings (7.5A, 600VAC/850VDC minimum), identical mechanical form factor (3-position, 8-3 shell size, bayonet lock), and identical operating temperature range (-55°C to 125°C). The primary distinction is contact finish material, which affects corrosion resistance characteristics and cost. Both parts are RoHS non-compliant and suitable for military and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can MSW01E8-3P directly replace MS3111E8-3P in existing assemblies?

A: Yes. Both connectors share identical shell size (8-3), position count (3), fastening mechanism (bayonet lock), mounting configuration (free hanging in-line), and electrical ratings (7.5A, 600VAC/850VDC). Physical and electrical interchangeability is confirmed. The contact finish difference (gold vs. cadmium) does not affect mechanical fit or basic electrical function.

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

A: Both termination methods are solder-based. Solder cup refers to a pre-formed cup geometry designed to accept wire leads for solder connection. Solder termination is a general classification encompassing solder cup and similar solder-compatible connection methods. Both MS3111E8-3P and MSW01E8-3P support solder-based wire attachment.

Q: Does the contact finish difference affect electrical performance?

A: Contact finish affects corrosion resistance and long-term signal integrity in harsh environments. Gold finish (MS3111E8-3P) provides superior corrosion resistance. Cadmium finish (MSW01E8-3P) is acceptable for military applications and meets 26482 style specifications. Selection depends on environmental exposure and application requirements.

Q: Are both parts suitable for military applications?

A: Yes. Both parts are active production components with military-grade specifications. MS3111E8-3P is manufactured by ITT Cannon, LLC. MSW01E8-3P is manufactured by Milspecwest, LLC and conforms to 26482 style connector standards. Both are RoHS non-compliant, consistent with military component requirements.

Q: What is the temperature operating range for both parts?

A: Both MS3111E8-3P and MSW01E8-3P operate across -55°C to 125°C, ensuring compatibility in extreme thermal environments typical of military and aerospace applications.

Q: Can I use these connectors interchangeably in production?

A: Yes, provided your application does not specify a particular manufacturer or contact finish requirement. Verify that cadmium contact finish (MSW01E8-3P) meets your corrosion resistance and environmental specifications before substitution.