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

Part Overview

The 3M 1245 X 6" is an RF EMI shielding tape constructed from embossed copper foil with non-conductive, single-sided adhesive. The product is designed for electromagnetic interference shielding applications requiring a 6-inch width and 0.004-inch thickness. The main part (1245 X 6") is currently obsolete, necessitating identification of active substitute components that maintain equivalent electrical and mechanical performance characteristics.

Substiute Parts

1245 X 6"

3MIn Stock: 11281245 X 6" Datasheet

Current PartRFQ

6-6-1245

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 3M 1245 X 6" is based on the following critical parameters that must remain constant:

• Manufacturer and Series: 3M 1245 series maintains consistent material composition and adhesive formulation
• Width: 6.000" (152.40mm) — required for mechanical fit and application compatibility
• Thickness: 0.004" (0.10mm) — determines electrical shielding effectiveness and mechanical properties
• Material: Embossed Copper Foil — provides required electromagnetic shielding performance
• Adhesive Type: Non-Conductive, Single Sided — ensures electrical isolation and application method compatibility
• Shelf Life and Storage Conditions: 60 Months at 50°F ~ 80°F (10°C ~ 27°C) — maintains product performance over time

The substitute part 6-6-1245 maintains all critical electrical and mechanical parameters. The primary difference is length (15 feet versus 54 feet), which does not affect substitutability for applications requiring the specified tape dimensions and properties.

Parameter Comparison

Engineering Selection Recommendations

The 3M 6-6-1245 is the manufacturer-recommended substitute for the obsolete 1245 X 6" shielding tape. Selection is based on the following engineering criteria:

• Product Status: The substitute part is active and currently in production, ensuring long-term availability and supply chain continuity
• Electrical and Mechanical Equivalence: All critical parameters—material composition, width, thickness, and adhesive type—are identical to the original part
• Compliance: The substitute part is ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing
• Moisture Sensitivity: MSL rating of 1 (Unlimited) indicates no special moisture handling requirements during storage or assembly
• Export Classification: Both parts maintain EAR99 classification, ensuring consistent regulatory treatment

The only functional difference is tape length. The substitute provides 15 feet versus the original 54 feet. Component selection should account for application-specific length requirements.

Frequently Asked Questions (FAQ)

Q: Can the 6-6-1245 substitute directly for the obsolete 1245 X 6" in existing designs?

A: Yes. The substitute maintains identical width (6.000"), thickness (0.004"), material (embossed copper foil), and adhesive type (non-conductive, single-sided). All electrical and mechanical properties remain equivalent.

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

A: The tape length differs. The original 1245 X 6" provides 54 feet, while the 6-6-1245 substitute provides 15 feet. Width, thickness, and material composition are identical.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The 6-6-1245 is ROHS3 compliant and carries an MSL rating of 1 (Unlimited), indicating compliance with current electronic component manufacturing standards.

Q: Are there any storage or handling differences between the original and substitute parts?

A: No. Both parts require identical storage conditions (50°F ~ 80°F / 10°C ~ 27°C) and maintain a 60-month shelf life when stored according to specifications.

Q: Is the substitute part currently available?

A: Yes. The 6-6-1245 is an active product with current inventory availability, unlike the obsolete original part.