3M 11-56S-W Ring Terminal Connector 18-22 AWG #5/16 Stud

Part Overview

The 3M 11-56S-W is a non-insulated ring terminal connector designed for 18-22 AWG wire gauges with a 5/16 stud configuration. This circular terminal features a brazed seam construction and tin-plated copper contact material, suitable for free-hanging in-line mounting applications. The part is ROHS3 compliant and maintains active product status with 680 units currently in stock. Alternative equivalent parts may be required due to inventory constraints, application-specific feature requirements, or supply chain considerations.

Substiute Parts

11-56S-W

3MIn Stock: 72211-56S-W Datasheet

Current PartRFQ

P18-56R-C

Panduit CorpIn Stock: 1926P18-56R-C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 11-56S-W is determined by strict equivalence across the following critical parameters:

• Terminal Type: Circular configuration
• Stud/Tab Size: 5/16 Stud (mechanical interface requirement)
• Wire Gauge: 18-22 AWG (electrical and mechanical compatibility)
• Termination Method: Crimp (assembly process compatibility)
• Contact Material: Copper (electrical conductivity requirement)
• Contact Finish: Tin (corrosion resistance and solderability)
• Insulation Type: Non-Insulated (form factor requirement)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The Panduit Corp P18-56R-C meets all substitution criteria. Minor dimensional variations within manufacturing tolerances (thickness, width, and length) do not affect functional equivalence. The addition of serrated termination in the substitute part provides enhanced mechanical retention without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 3M 11-56S-W and Panduit P18-56R-C are active, ROHS3-compliant products suitable for direct substitution in 18-22 AWG ring terminal applications with 5/16 stud mounting. Selection between these parts should be based on:

• Inventory availability and lead time requirements
• Application-specific performance needs related to the serrated termination feature in the Panduit part
• Established supplier relationships and procurement procedures
• Cost considerations and volume requirements

Both parts maintain equivalent electrical and mechanical performance characteristics for standard crimp terminal applications.

Frequently Asked Questions (FAQ)

Q: Can the Panduit P18-56R-C replace the 3M 11-56S-W in existing designs?

A: Yes. Both parts share identical critical parameters: 5/16 stud size, 18-22 AWG wire gauge, circular terminal type, crimp termination, copper with tin finish, and non-insulated construction. The serrated termination feature on the Panduit part provides additional mechanical retention without affecting compatibility.

Q: What is the significance of the serrated termination feature on the Panduit part?

A: Serrated termination enhances mechanical grip on the wire during the crimp process, improving retention force. This is a functional enhancement that does not compromise compatibility with the original 3M design.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within manufacturing tolerances. The 3M part has a width of 0.470" versus 0.460" for the Panduit part, and length of 0.880" versus 0.910". These variations do not affect functional performance or stud interface compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and carry the same ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection should be based on availability, cost, and any specific performance requirements related to termination retention characteristics.