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Reduce
or Eliminate EMI / RFI Interference
An effective EMI/RFI shielding paint for use on plastic electronics enclosures. Consists of a tough, durable acrylic base pigmented with a high purity nickel flake.
- UL Recognized
(File # E202609)
- Tested in compliance with IEEE Std. 299-1997
- Median attenuation 50 dB ±25 dB per 38 µm (~1.5 mil) for frequency range of 10 to 18,000 MHz
- High Conductivity—Low Surface resistivity of 0.6 Ω/sq for one coat
- Tough and durable coating
- Stronger adhesion than water based coatings
- Low VOC’s
- Thin
or clean with M.G. Thinner Cleaner (Cat. No. 435-1L)
Applications & Usages:
Its primary applications are in cell phones, PDA’s, other consumer electronics, telecommunication equipment, industrial equipment, medical devices, military devices, and aerospace equipment. It can also works well on drywall, and can be used to shield entire rooms. Detailed Application Instruction for Aerosol and Liquid.
IMPORTANT USAGE INFO: |
841 Aerosol
Product must be vigorously shaken (approx. 2 minutes AFTER you hear the marble inside) prior to use, and periodically during use. After use, invert can and spray to clear nozzle prior to storing. |
Compatibility:
Adhesion—The 841 coating adheres to ABS, PBT, and most materials found on printed circuit assemblies; however, it is not compatible with contaminants like water, oil, and greasy flux residues that may affect adhesion. If contamination is present, clean the surface to be coated first. For a list see the 841 Adherence Compatibility chart.
| AEROSOL SPECIFICATIONS: |
| Curing & Work Schedule |
Aerosol |
Liquid |
| Dry to Touch (aerosol) |
30 to 45 s |
3 to 5 min |
| Recoat time (aerosol) |
1 min |
2 min |
| Full Cure at room temp. |
24 hour |
24 hour |
| Full Cure at 65 °C |
15 min |
60 min |
| Shelf Life |
1 year |
3 years |
| Storage Temperature Limits |
-5 to 40 °C
(23 to 104°F) |
-5 to 40 °C
(23 to 104°F) |
| Service Ranges |
Aerosol |
Liquid |
| Service Temperature |
-40 to +120 °C
(-40 to +248 °F) |
-40 to +120 °C
(-40 to +248 °F) |
| Maximum Coverage |
per can |
per liter |
| for 38 µm (1.5 mil) |
<8,400 cm2 (<9 ft2) |
<110,000 cm2 (<120 ft2) |
| Electric Properties - Cured |
Surface Resistance (Aerosol):
|
|
See
Chart |
| 1 × coat @ 1.0 mil |
|
≤0.7 ohm/sq |
| 2 × coats @ 1.5 mil |
|
≤0.3 ohm/sq |
| 3 × coats @ 2.0 mil |
|
≤0.2 ohm/sq |
Surface Resistance (Liquid):
|
|
|
| 1 × coat (~1.50 mil) |
|
≤0.6 ohm/sq |
| 2 × coats (~3.00 mil) |
|
≤0.25 ohm/sq |
| 3 × coats (~4.50 mil) |
|
≤0.15 ohm/sq |
| Shielding Attenuation: |
Frequency |
Attenuation |
| for 33 µm [1.5 mil] |
|
|
| IEEE STD 299-1997 |
10 to 100 kHz |
42 dB to 75 dB |
| |
100 kHz to 1 MHz |
42 dB to 69 dB |
| |
1 MHz to 10 MHz |
40 dB to 69 dB |
| |
10 MHz to 100 MHz |
24 dB to 40 dB |
| |
100 MHz to 1 GHz |
29 dB to 48 dB |
| |
1 GHz to 10 GHz |
31 dB to 57 dB |
| |
10 GHz to 18 GHz |
31 dB to 58 dB |
| Physical Properties - Cured |
Color
|
Stainless steel |
Abrasion resistant
|
Yes |
Blister resistant
|
Yes |
| Peeling resistant |
Yes |
| Shielding
Effectiveness |
See
Chart |
| Physical Properties - Uncured |
Aerosol |
Liquid |
Color
|
Steel Grey |
Steel Grey |
| Viscosity at 25 °C [77 °F] |
100 cP [0.1 Pa·s] |
3920 cP [3.92 Pa·s] |
| Density |
1.65 g/mL |
1.65 g/mL |
| Solids Percentage (wt/wt) |
~41% |
~65% |
| Flash Point |
-18 °C [-0.4 °F] |
-18 °C [-0.4 °F] |
| Odor |
Ethereal |
Ethereal |
|
| Catalog
Number | Sizes
Available | Description |
| 841-340G |
340 g
(12 oz) | Aerosol |
| 841-900ML |
900 mL
(1.65 kg) | Liquid |
| 841-1G | 1
gal (6.75 kg) | Liquid |
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