3M 1245 X 6" RF EMI Shielding Sheet - Equivalent & Substitute Parts

Part Overview

The 3M 1245 X 6" is an RF EMI shielding sheet composed of embossed copper foil with non-conductive, single-sided adhesive. This product is classified as obsolete. The 12" × 6" sheet format provides fixed-size EMI shielding coverage for applications requiring discrete shielding areas. Due to obsolete status, equivalent substitute parts in active production are necessary to maintain supply chain continuity for ongoing applications and new designs.

Substiute Parts

1245 X 6"

3MIn Stock: 10541245 X 6" Datasheet

Current PartRFQ

6-6-1245

3M (TC)In Stock: 8006-6-1245 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 3M 6-6-1245 is qualified as an equivalent based on the following critical parameters:

• Series Continuity: Both parts belong to the 3M 1245 series, ensuring material and adhesive formulation consistency
• Material Composition: Identical embossed copper foil construction with non-conductive, single-sided adhesive
• Thickness: Matching 0.004" (0.10mm) thickness maintains electrical and mechanical performance
• Width: Identical 6.000" (152.40mm) width ensures compatibility with existing mounting and application geometries
• Shelf Life & Storage: Identical 60-month shelf life and storage temperature requirements (50°F ~ 80°F)
• Product Status: The substitute is active production, resolving obsolescence constraints

The primary difference is format: the main part is supplied as a discrete 12" × 6" sheet, while the substitute is supplied as a 15-foot roll in bulk packaging. Both formats deliver the same material properties and adhesive characteristics required for RF EMI shielding applications.

Parameter Comparison

Engineering Selection Recommendations

The 3M 6-6-1245 shielding tape is the qualified substitute for the obsolete 3M 1245 X 6" shielding sheet. Selection is based on:

• Material & Electrical Properties: Identical copper foil composition and non-conductive adhesive ensure equivalent RF EMI shielding performance
• Mechanical Compatibility: Matching width (6.000") and thickness (0.004") allow direct substitution in existing mounting configurations
• Compliance Status: The substitute achieves ROHS3 compliance, meeting current regulatory requirements. The main part status is not specified
• Production Continuity: Active product status ensures long-term availability and supply chain reliability
• Format Consideration: The substitute is supplied as a 15-foot roll rather than discrete sheets. Applications requiring fixed 12" × 6" dimensions must cut material from the roll to specification

Frequently Asked Questions (FAQ)

Q: Can the 3M 6-6-1245 tape directly replace the 1245 X 6" sheet in existing designs?

A: Yes. The material composition, adhesive type, width, and thickness are identical. The substitute must be cut to the required length (12.000" for equivalent sheet size) from the 15-foot roll.

Q: What is the primary difference between these two products?

A: The main part is a pre-cut 12" × 6" sheet in standard packaging. The substitute is a 15-foot continuous roll in bulk packaging. Both deliver identical RF EMI shielding material and adhesive properties.

Q: Does the substitute meet current compliance standards?

A: Yes. The 3M 6-6-1245 is ROHS3 compliant with MSL rating 1 (Unlimited), meeting current regulatory and moisture sensitivity requirements.

Q: Are there any storage or handling differences?

A: Both products require identical storage conditions (50°F ~ 80°F) and maintain 60-month shelf life. No additional handling precautions are required for the substitute.

Q: What is the cost implication of switching to the roll format?

A: The bulk roll packaging typically offers material cost advantages per unit area compared to pre-cut sheets, though application waste from cutting must be considered in total cost analysis.