3M 12-56S-W Ring Terminal Connector Equivalent & Substitute Parts

Part Overview

The 3M 12-56S-W is a non-insulated ring terminal connector designed for 14-16 AWG wire gauges with a 5/16" stud connection. 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 currently active in production with 1017 pieces in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component procurement, inventory management, or design standardization.

Substiute Parts

12-56S-W

3MIn Stock: 108012-56S-W Datasheet

Current PartRFQ

P14-56R-C

Panduit CorpIn Stock: 1051P14-56R-C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 12-56S-W is determined by the following critical parameters:

• Terminal Type: Must be Circular
• Stud/Tab Size: Must be 5/16 Stud
• Contact Material: Must be Copper
• Contact Finish: Must be Tin
• Termination Method: Must be Crimp
• Insulation Type: Must be Non-Insulated
• Thickness: Must be 0.030" (0.76mm)
• RoHS Compliance: Must maintain ROHS3 Compliant status

The Panduit Corp P14-56R-C qualifies as a substitute based on these parameters. While the wire gauge range extends to 18 AWG (compared to the 3M part's 14-16 AWG), the mechanical and electrical characteristics remain compatible for applications within the 14-16 AWG specification range.

Parameter Comparison

Engineering Selection Recommendations

Both the 3M 12-56S-W and Panduit P14-56R-C ring terminal connectors maintain active product status and ROHS3 compliance. Selection between these parts should be based on:

• Availability: 3M 12-56S-W has 1017 pieces in stock; Panduit P14-56R-C has 1009 pieces in stock
• Wire Gauge Specification: The 3M part is rated for 14-16 AWG; the Panduit part accommodates 14-18 AWG. For applications strictly within the 14-16 AWG range, both parts are functionally equivalent
• Mechanical Dimensions: Minor variations in width and length exist but remain within acceptable tolerances for standard mounting applications
• Series Designation: The Panduit part is part of the Pan-Term® series, while the 3M part carries no specific series designation

Both parts are suitable for direct substitution in applications requiring 5/16" stud circular ring terminals with crimp termination and tin-plated copper contacts.

Frequently Asked Questions (FAQ)

Q: Can the Panduit P14-56R-C replace the 3M 12-56S-W in all applications?

A: Yes, for applications using 14-16 AWG wire. The Panduit part's extended wire gauge range (14-18 AWG) does not affect compatibility within the 14-16 AWG specification of the 3M part.

Q: What are the critical parameters that define substitution eligibility?

A: Terminal type (Circular), stud size (5/16"), contact material (Copper), contact finish (Tin), termination method (Crimp), insulation type (Non-Insulated), thickness (0.030"), and RoHS compliance status must all match.

Q: Are there dimensional differences between these parts?

A: Minor variations exist. The Panduit P14-56R-C has a slightly narrower outer edge width (0.460" vs. 0.470") and longer overall length (0.910" vs. 0.880"). These differences are compatible with standard mounting applications.

Q: Do both parts have the same compliance certifications?

A: Both parts are ROHS3 compliant and carry EAR99 ECCN classification. The Panduit part includes REACH Unaffected status.

Q: What is the difference between the brazed seam feature and serrated termination?

A: The 3M part features a brazed seam construction. The Panduit part includes both brazed seam and serrated termination features, which enhance mechanical grip during the crimp process.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the application operates within the 14-16 AWG wire gauge range and uses 5/16" stud mounting. The mechanical and electrical characteristics are equivalent for this specification range.