3M 1126 8"X10" RF EMI Shielding Sheet - Equivalent & Substitute Parts

Part Overview

The 3M 1126 8"X10" is an RF EMI shielding sheet constructed from copper foil with conductive, single-sided adhesive. This component provides electromagnetic interference shielding for electronic enclosures and assemblies. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

1126 8"X10"

3MIn Stock: 7431126 8"X10" Datasheet

Current PartRFQ

1170 7.7"X10"

3MIn Stock: 14051170 7.7"X10" Datasheet

MFR RecommendedRFQ

11.5X12-6-1126

3MIn Stock: 84311.5X12-6-1126 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RF EMI shielding sheets is determined by the following parameters:

• Foil Material: Copper or aluminum foil compositions provide equivalent electromagnetic shielding performance within the RF frequency spectrum
• Adhesive Configuration: Single-sided conductive adhesive maintains functional equivalence
• Operating Temperature Range: -40°C ~ 130°C compatibility ensures thermal performance parity
• Moisture Sensitivity Level: MSL 1 (Unlimited) classification indicates equivalent moisture handling
• Thickness Tolerance: Foil thickness within 0.003" to 0.004" range maintains shielding effectiveness
• Dimensional Compatibility: Length and width dimensions must accommodate the application space; sheets with equal or greater surface area are functionally compatible

Two substitute parts meet these criteria:

1. 3M 1170 7.7"X10" - Aluminum foil alternative with equivalent adhesive and thermal specifications
2. 3M 11.5X12-6-1126 - Copper foil variant with larger dimensions and active product status

Parameter Comparison

Engineering Selection Recommendations

3M 1170 7.7"X10" is recommended for applications where the original 1126 8"X10" dimensions can accommodate a 0.3" width reduction. This aluminum foil substitute maintains active product status and RoHS compliance. The 0.001" thickness reduction (0.003" vs. 0.004") remains within acceptable shielding performance parameters for RF EMI applications.

3M 11.5X12-6-1126 is recommended for applications requiring larger coverage area or where dimensional flexibility exists. This copper foil substitute maintains material parity with the original part, active product status, and ROHS3 compliance. The increased dimensions (12.000" x 11.500") provide expanded shielding coverage.

Both substitutes maintain equivalent operating temperature ranges, MSL ratings, and conductive single-sided adhesive configurations. Selection between alternatives depends on dimensional constraints and material preference (aluminum vs. copper foil).

Frequently Asked Questions (FAQ)

Q: Can the 3M 1170 7.7"X10" replace the 1126 8"X10" in all applications?

A: The 1170 substitute is functionally equivalent within the RF EMI shielding parameters. However, the 0.3" width reduction (7.7" vs. 8.0") must be verified against application space constraints. Both parts maintain identical length (10.0"), operating temperature range, MSL rating, and conductive adhesive configuration.

Q: What is the material difference between the 1126 and 1170 substitutes?

A: The 1126 uses copper foil; the 1170 uses aluminum foil. Both materials provide equivalent electromagnetic shielding performance in RF frequency applications. Material selection depends on application-specific requirements for conductivity, cost, or environmental factors.

Q: Is the 11.5X12-6-1126 a direct replacement for the 1126 8"X10"?

A: The 11.5X12-6-1126 is functionally equivalent but with larger dimensions (12.000" x 11.500" vs. 8.000" x 10.000"). This substitute is suitable for applications where increased shielding area is acceptable or required. Both parts use copper foil and maintain identical thickness and thermal specifications.

Q: What compliance certifications apply to these substitutes?

A: The 1170 7.7"X10" is RoHS Compliant. The 11.5X12-6-1126 is ROHS3 Compliant. Both substitutes are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Are there packaging differences between the main part and substitutes?

A: The original 1126 8"X10" packaging is listed as "-" (not specified). Both substitutes are packaged in boxes. Verify packaging requirements for your procurement and logistics processes.