MS3111F8-3S Equivalent & Substitute Parts

Part Overview

The MS3111F8-3S is a 3-position circular connector receptacle manufactured by Amphenol Industrial Operations, conforming to MIL-DTL-26482 Series I specifications. This connector features female sockets with solder cup termination, bayonet lock fastening, and is designed for aerospace, military, communication systems, and industrial applications. The part is currently active with 1099 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same connector category, enabling procurement flexibility and supply chain continuity.

Substiute Parts

MS3111F8-3S

Amphenol Industrial OperationsIn Stock: 1201MS3111F8-3S Datasheet

Current PartRFQ

MSW01E8-3S-SR

Milspecwest, LLCIn Stock: 1050MSW01E8-3S-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS3111F8-3S is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets
• Number of positions: 3
• Shell size designation: 8-3
• Mounting configuration: Free hanging (in-line)
• Fastening mechanism: Bayonet lock
• Current rating: 7.5A minimum
• Voltage rating: 600VAC minimum
• Operating temperature range: -55°C to 125°C minimum
• Shell material: Aluminum
• Ingress protection: Environment resistant

The MSW01E8-3S-SR meets these core electrical and mechanical parameters, qualifying it as a functional substitute. Differences in termination method (solder vs. solder cup), shell finish, and contact finish represent acceptable variations within the MIL-DTL-26482 connector family while maintaining electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the MS3111F8-3S and MSW01E8-3S-SR are active products with current inventory availability. The MS3111F8-3S maintains full MIL-DTL-26482 Series I compliance with gold-plated mating contacts and chromate finish. The MSW01E8-3S-SR provides equivalent mechanical and electrical performance with cadmium plating and includes integrated strain relief. The MSW01E8-3S-SR carries RoHS non-compliant status, whereas the MS3111F8-3S does not specify RoHS compliance. Selection between these parts should be based on specific application requirements regarding contact finish, shell finish, termination method, and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can MSW01E8-3S-SR replace MS3111F8-3S in all applications?

A: MSW01E8-3S-SR meets the core electrical and mechanical requirements (3 positions, 8-3 shell size, 7.5A current rating, 600VAC+ voltage rating, bayonet lock, -55°C to 125°C operating range). However, differences in contact finish (cadmium vs. gold), shell finish, and termination method may affect performance in specific environments. Application-specific requirements must be evaluated.

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 attachment. Solder termination uses a flat or formed contact for direct solder connection. Both methods provide electrical connection; selection depends on assembly process and wire gauge compatibility.

Q: Are these connectors interchangeable with other MIL-DTL-26482 connectors?

A: Interchangeability is limited to connectors with identical shell size (8-3), position count (3), and fastening type (bayonet lock). Other shell sizes or position counts are not compatible despite conforming to the same military standard.

Q: What does "26482 Style Connectors" mean for the MSW01E8-3S-SR?

A: This designation indicates the connector follows the design principles and dimensional standards of MIL-DTL-26482 but may not carry full military specification certification. Electrical and mechanical parameters remain equivalent to the standard.

Q: Does the integrated strain relief on MSW01E8-3S-SR affect compatibility?

A: Strain relief is an external feature that does not affect mating compatibility or electrical performance. It provides additional cable protection during assembly and field use.