3M 123-8 Ring Terminal Connector - Equivalent & Substitute Parts

Part Overview

The 3M 123-8 is a circular ring terminal connector designed for 12-16 AWG wire gauges with an #8 stud connection. This non-insulated crimp terminal features a butted seam construction and heavy-duty design, suitable for free-hanging in-line mounting applications. The part is currently active in production status and ROHS3 compliant. Substitute parts may be required due to supply chain considerations, inventory availability, or specific application requirements where alternative construction methods or contact materials are acceptable.

Substiute Parts

123-8

3MIn Stock: 907123-8 Datasheet

Current PartRFQ

P12-8HDR-L

Panduit CorpIn Stock: 1055P12-8HDR-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Panduit Corp P12-8HDR-L qualifies as a direct substitute for the 3M 123-8 based on the following critical parameters:

• Terminal Type & Stud Size: Both parts are circular ring terminals with #8 stud connections
• Wire Gauge Compatibility: Both accommodate 12-16 AWG wire
• Termination Method: Both use crimp termination
• Insulation Classification: Both are non-insulated
• Mounting Configuration: Both are free-hanging in-line designs
• Thickness: Both maintain 0.050" (1.27mm) thickness
• Regulatory Compliance: Both are ROHS3 compliant

Substitution is valid where the differences in seam construction (butted vs. brazed), contact material (unspecified vs. copper), and contact finish (unspecified vs. tin) do not conflict with application requirements.

Parameter Comparison

Engineering Selection Recommendations

3M 123-8 is the primary choice for new designs and applications requiring active product status with ongoing manufacturer support. This part maintains ROHS3 compliance and is currently in production.

Panduit P12-8HDR-L serves as a functional equivalent where the core electrical and mechanical parameters align with application requirements. However, this part carries obsolete product status, indicating limited availability and no active manufacturer support. Selection of this substitute should be limited to legacy system maintenance or where inventory constraints necessitate alternative sourcing. The brazed seam construction and specified copper-tin contact materials provide defined electrical characteristics compared to the unspecified contact properties of the primary part.

Both parts satisfy the same wire gauge range, stud size, and termination method requirements. Dimensional variations (length and width) must be evaluated against specific mounting space constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can the Panduit P12-8HDR-L directly replace the 3M 123-8 in existing assemblies?

A: Yes, from an electrical and mechanical standpoint. Both parts accept 12-16 AWG wire, crimp to #8 studs, and maintain identical thickness. However, dimensional differences in length (0.780" vs. 0.730") and width (0.310" vs. 0.380") must be verified against available mounting space.

Q: What is the significance of the seam construction difference (butted vs. brazed)?

A: Seam construction affects mechanical strength and reliability. Brazed seams (Panduit) provide a continuous joint, while butted seams (3M) rely on the crimp connection. Both are acceptable for the specified wire gauge and stud size, but application-specific vibration or thermal cycling requirements should be considered.

Q: Why is the Panduit part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. This part may have limited inventory availability through distributors. For new designs, the active 3M 123-8 is the recommended choice.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry the same ECCN and HTSUS classifications. No regulatory barriers exist to substitution from a compliance perspective.

Q: How do the unspecified contact materials on the 3M part compare to the copper-tin specification on the Panduit part?

A: The 3M 123-8 does not provide contact material or finish specifications in the available data. The Panduit P12-8HDR-L specifies copper with tin finish, which provides defined electrical conductivity and corrosion resistance. For applications with specific contact resistance or environmental requirements, the Panduit specification offers greater transparency.