Benefits
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EMI shielding: Helps reduce electromagnetic interference when properly applied and integrated into the shielding design.
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Flexible application: The soft copper foil conforms to many flat and gently contoured surfaces.
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Efficient converting: The release liner facilitates handling and precision die-cutting.
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Reliable copper surface: The backing supports soldering and electrical contact where the design permits.
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Industrial versatility: Suitable for electronic components, cable shielding, shielded enclosures, and electrical design work.
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Material stability: The copper backing resists oxidation and discoloration under suitable conditions.
Technical Specifications
| Property | Typical or published value |
|---|---|
| Product | 3M™ 1194 Copper Foil EMI Shielding Tape |
| Backing material | Dead-soft copper foil |
| Backing thickness | Approximately 0.036 mm |
| Total tape thickness, excluding liner | Approximately 0.067 mm |
| Adhesive type | Non-conductive acrylic pressure-sensitive adhesive |
| Minimum adhesion to steel | 3.3 N/cm |
| Minimum breaking strength | 39 N/cm |
| Shielding effectiveness | Average 65 dB over 300 kHz–2.5 GHz, according to the cited 3M TDS test method |
| Flame retardancy | UL 510A recognition |
| Liner | Removable release liner |
| Electrical rating | 600 V for dry applications, subject to applicable product documentation |
| Standard roll length | Commonly 33 m (36 yd) |
| Color | Copper |
Specifications are based on published 3M product information and the June 2021 technical data sheet. Values are typical or minimum values as indicated, not guaranteed specifications for every configuration. Shielding effectiveness depends on frequency, installation, contact quality, and the overall enclosure design. Confirm the current TDS and exact SKU before ordering or publishing final specifications.
Applications
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EMI/RFI shielding in electronic equipment and components.
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Shielding and contact applications in electrical assemblies.
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Cable wrapping and selected cable-shielding applications.
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Seaming and repair work on shielded rooms or enclosures.
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Electrical design, testing, prototyping, and troubleshooting.
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Transformer-related electrostatic shielding applications.
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Precision die-cut shielding parts and copper foil components.
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Electrical bonding applications where the non-conductive adhesive is suitable for the design.
Compatible Materials
Potential application surfaces and assemblies include:
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Metal enclosures and panels.
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Copper and other suitable metallic contact surfaces.
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Electronic components and equipment housings.
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Cable assemblies and shielding structures.
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Selected non-solderable surfaces where copper foil contact is required.
Compatibility depends on surface cleanliness, surface energy, operating environment, and the electrical design. Since the adhesive is non-conductive, applications requiring electrical continuity through the adhesive need a different construction or a specifically designed contact arrangement.
Industries
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Consumer and industrial electronics.
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Electrical and electronic equipment manufacturing.
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Telecommunications and communications equipment.
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Instrumentation and test laboratories.
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Electrical enclosure and shielded-room manufacturing.
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Transformer and power equipment manufacturing.
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Industrial OEMs requiring EMI shielding components.
Why Choose 3M 1194 Copper Foil Tape?
3M 1194 combines a solderable copper foil backing with a pressure-sensitive acrylic adhesive and a removable liner. This construction supports shielding applications that require a flexible copper surface and convenient conversion into custom shapes.
For OEM projects, Yousan can help assess roll specifications and potential converting requirements, including slitting and die-cutting, subject to material availability and technical evaluation. Please provide the required dimensions, quantity, application, and relevant performance criteria for review.
Installation Guide
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Prepare the surface: Ensure the bonding area is clean, dry, and free of dust, oil, and other contaminants.
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Check the design: Confirm that the non-conductive adhesive is suitable for the intended shielding or bonding function.
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Cut to size: Use the required roll width or a suitable die-cut shape.
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Apply the tape: Remove the liner and place the tape carefully, avoiding wrinkles, trapped air, and gaps.
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Apply firm pressure: Press the tape uniformly to promote intimate contact with the surface.
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Verify performance: Inspect adhesion and confirm shielding or grounding performance using the test method required for the finished assembly.
For soldering, grounding, or electrical bonding, follow the applicable process requirements and verify the completed connection. Do not rely on the adhesive layer itself to provide electrical continuity.
Storage
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Store in the original packaging in a clean, dry environment.
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Keep away from direct sunlight, excessive heat, moisture, and contaminants.
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Follow the applicable 3M storage conditions; the cited TDS specifies 10–27°C and relative humidity below 75%.
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The cited TDS states a shelf life of five years from the date of manufacture when stored under the specified conditions. Confirm the current product documentation and packaging for the supplied lot.
FAQ
1. What is 3M 1194 Copper Foil Tape used for?
It is used for EMI/RFI shielding, selected electrical bonding and grounding-related applications, cable shielding, and electronic prototyping.
2. Is the adhesive electrically conductive?
No. 3M 1194 uses a non-conductive acrylic adhesive. The copper foil backing is conductive and solderable, but electrical continuity through the adhesive should not be assumed.
3. Can 3M 1194 be die-cut?
Yes. The removable liner supports handling and die-cutting for custom shielding components.
4. Is 3M 1194 flame-retardant?
The cited 3M documentation identifies flame-retardant performance under UL 510A. Confirm the exact approval and requirements for your application using the current TDS.
5. What is its shielding effectiveness?
The June 2021 TDS reports an average of 65 dB over 300 kHz–2.5 GHz under its stated test method. Actual performance varies with frequency, installation, contact quality, and assembly design.
6. Can it be used for grounding?
It may be used in suitable grounding-related designs, but the non-conductive adhesive can prevent electrical continuity through the adhesive interface. Verify the required electrical contact path and test the completed assembly.
7. Can I order custom widths or die-cut shapes?
3M documentation indicates that standard and custom widths and lengths may be available. Yousan can review slitting and die-cutting requirements based on your dimensions, quantity, and material availability.
8. Is 3M 1194 suitable for outdoor or wet environments?
Do not assume suitability for continuous outdoor exposure or wet service based only on the product name. Confirm the environmental conditions and test the complete assembly.
Downloads
Available upon request:
- 3M 1194 Copper Foil Tape Technical Data Sheet (TDS)
- Safety Data Sheet (SDS)
- Product Brochure
- Die-Cutting Capability Guide
Please contact our sales team if you require the latest technical documentation.
