C-28 PS Copper Foil / Polyester Film EMI/RFI Shielding Tape
C-28 PS is a copper foil and polyester film laminate tape engineered for EMI and RFI shielding of electronic components, delivering signal attenuation of 105 dB at 100 MHz. Its 0.0038″ laminate construction combines a 0.0007″ copper foil, a 0.002″ polyester film, and a 0.001″ acrylic pressure-sensitive adhesive, providing a peel strength of 32 oz./inch of width and a dielectric strength of 8,800 volts.
Key Properties
- Peel Strength: 32 oz./inch of width (ASTM-D-1000)
- Signal Attenuation: 105 dB @ 100 MHz (ASTM D4935-99)
- Tensile Strength: 17,000 P.S.I. (ASTM-D-882)
- Dielectric Strength: 8,800 volts (ASTM D149)
- Carrier Construction: 0.0007″ copper foil laminated to 0.002″ polyester film
- Total Tape Thickness: 0.0038″ (ASTM-D-3652)
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Copper Foil Thickness | 0.0007″ | — |
| Polyester Film Thickness | 0.002″ | — |
| Adhesive Thickness | 0.001″ | — |
| Release Liner | 90 lb. | — |
| Total Thickness | 0.0038″ | ASTM-D-3652 |
| Color | Copper | — |
| Shelf Life | 1 year when stored under conditions of 70°F (21°C) and 50% R.H. | — |
Mechanical Properties
| Property | Value | Test Method |
| Tensile Strength | 17,000 P.S.I. | ASTM-D-882 |
| Elongation at Break | 100% | ASTM-D-882 |
Electrical Properties
| Property | Value | Test Method |
| Signal Attenuation | 105dB @ 100 MHz | ASTM D4935-99 |
| Dielectric Strength | 8,800 volts | ASTM D149 |
Adhesion Properties
| Property | Value | Test Method |
| Peel Strength | 32 oz./inch of width | ASTM-D-1000 |
- EMI/RFI shielding of electronic enclosures
- Cable and connector shielding
- Grounding and static drain applications
- Shielding of PCB and component assemblies
- High-attenuation shielding for sensitive electronics
Common industries: electronics manufacturing, telecommunications, aerospace and defense, industrial controls.
C-28 PS is a copper foil and polyester film laminate tape designed to provide electromagnetic and radio-frequency interference (EMI/RFI) shielding for electronic assemblies. The tape combines a 0.0007″ copper foil layer with a 0.002″ polyester film backing and a 0.001″ acrylic pressure-sensitive adhesive, delivering signal attenuation of 105 dB at 100 MHz for high-performance shielding applications.
The acrylic PSA provides a peel strength of 32 oz./inch of width for secure, lasting adhesion, while the laminate construction offers a tensile strength of 17,000 P.S.I. and 100% elongation at break, allowing the tape to conform to irregular surfaces without cracking or delaminating. A dielectric strength of 8,800 volts supports use in applications requiring electrical insulation alongside shielding performance.
The tape is supplied with a 90 lb. release liner for clean application and precision die-cutting, and carries a shelf life of 1 year when stored at 70°F (21°C) and 50% relative humidity.
What differentiates C-28 PS from other EMI/RFI shielding tape grades?
C-28 PS combines a thin, conformable 0.0038" copper foil/polyester film laminate with a high signal attenuation rating of 105 dB at 100 MHz, giving it strong shielding performance while remaining thin enough to conform to enclosure seams, cable bundles, and irregular component surfaces.
Why is peel adhesion important for this application?
EMI/RFI shielding is only effective if the tape stays fully bonded to the substrate — any lifting or gapping breaks the shielding path and creates a leakage point. C-28 PS's peel strength of 32 oz./inch of width keeps the copper foil in continuous contact with the shielded surface over the life of the application.
What is the operating/service/temperature range for C-28 PS?
The manufacturer's TDS does not specify an operating temperature range. It lists recommended storage conditions of 70°F (21°C) and 50% relative humidity, under which the tape carries a 1-year shelf life.
Is C-28 PS suitable for regulated or flame-rated environments?
No compliance standards are specified on the manufacturer's TDS for this material, so suitability for regulated, flame-rated, or similarly certified environments should be confirmed independently with H-O Products before specifying.
How should C-28 PS be specified?
Specify grade (C-28 PS), thickness, adhesive type, liner type, and dimensional tolerances.
