Increase package design flexibility while maintaining electrical integrity
The GS8000 Series of GORE® EMI Shielding Materials improves package design flexibility without compromising the electrical performance of the device. These highly compressible materials are specifically engineered to maintain consistent conductivity through a wide working range (see Figure 1 and Figure 2 below).
To purchase this product or request a quote, please contact an authorized Gore distributor.
A comparison of features, product forms, and available configurations for Gore EMI gaskets and grounding pads.
With Gore’s strong technology focus in materials, the GS8000 Series was developed with a unique conductive foam. The soft conductive foam construction accommodates surface variations in covers and printed circuit boards, alleviating the need to specify very tight tolerances. This soft construction also makes the GS8000 Series compatible with plastic housings and snap fasteners. This material maintains excellent shielding performance in a trace width as narrow as 1 mm, providing comparable performance to other EMI shielding materials that are 3 times the width. With the lower compression or closure force, fewer fasteners are needed.
Available as grounding pads and precision die-cut parts that enable precise, high-volume assembly, the GS8000 Series of GORE® EMI Shielding Materials provide maximum cavity-to-cavity EMI protection in a smaller size for more design flexibility.
Available as custom die-cut gaskets, strip gaskets, and grounding pads
| Property | Value |
|---|---|
| Temperature range | - 45°C to 85°C |
| RoHS Status (lead, cadmium, hexavalent chromium, mercury, bromine) | Pass |
| Flammability in accordance with UL 94 horizontal burn method | Pass |
| Halogen levels (measured per BS EN 14582:2007) | |
| Chlorine | < 50 ppm |
| Bromine | < 50 ppm |
| Fluorine | < 50 ppm |
| Iodine | < 50 ppm |
| Typical working range (for grounding pads) | 0.15 mm to 2.2 mm (0.006" to 0.087") |
| Typical working range (for EMI gaskets) | 0.15 mm to 1.4 mm (0.006" to 0.055") |
| Typical pressure to recommended compression stop (RCS) | 20 to 50 psi |
The GS8000 Series of GORE® EMI Shielding Materials performs wellin both grounding and EMI shielding applications. Gore recommendsusing each variant within a range of service heights (gap distances).For shielding applications, Gore recommends a smaller service heightrange than for grounding applications to ensure a robust EMI seal.
The low closure force and broad range of tolerance take-up results inmultiple product choices for some gap distances. Selecting the mostsuitable variant for a given application depends on:
Figure 1 and Figure 2 show recommended service heights (gap distances) for each variant.
Three of the variants among the GS8000 Series provide conductivity when compressed to 0.6 mm (0.24 in); however, the amount of force and DC resistance varies for each. The table below shows the values for each of these three variants.
| Variants | Force Required (psi) | DC Resistance (ohms) |
|---|---|---|
| GS8000-063 | 15 | 0.03 |
| GS8000-095 | 50 | 0.02 |
| GS8000-126 | 85 | 0.01 |
| Variants | Weight (g) | Compression Stop | Compression Stop mm (in) |
Pressure to Achieve Compression (psi) | Initial DC Resistance (ohms) | Recovered Thickness mm (in)1 |
|---|---|---|---|---|---|---|
| GS8000-03X | 0.008 | High Recommended Low |
0.45 (0.018) 0.30 (0.012) 0.15 (0.006) |
5 80 380 |
0.245 0.125 0.015 |
0.56 (0.022) 0.38 (0.015) 0.25 (0.010) |
| GS8000-063 | 0.010 | High Recommended Low |
0.90 (0.035) 0.60 (0.024) 0.30 (0.012) |
5 20 100 |
0.070 0.025 0.007 |
1.19 (0.047) 0.91 (0.036) 0.51 (0.020) |
| GS8000-095 | 0.011 | High Recommended Low |
1.20 (0.047) 0.85 (0.033) 0.50 (0.020) |
4 20 100 |
0.115 0.040 0.010 |
1.65 (0.065) 1.24 (0.049) 0.74 (0.029) |
| GS8000-126 | 0.013 | High Recommended Low |
2.20 (0.087) 1.40 (0.055) 0.60 (0.024) |
1 4 80 |
0.240 0.150 0.012 |
2.62 (0.103) 1.90 (0.075) 0.94 (0.037) |
1 To measure the recovered thickness, samples were compressed to the compression stop. While compressed, the samples were subjected to a 70°C temperature soak for 70 hrs per ASTM D395B. Lastly, the samples were released from compression and allowed to recover for 30 minutes before the recovered thickness was measured.
For use as an EMI Gasketing Material, we recommend compressing the GS8000 material to at least the published recommended compression stop to ensure an effective EMI seal (see table below).
| Variants | Compression Stop | Compression Stop mm (in) |
Shielding Effectiveness1 |
|---|---|---|---|
| GS8000-03X | Recommended Low |
0.30 (0.012) 0.15 (0.006) |
> 50 dB > 65 dB |
| GS8000-063 | Recommended Low |
0.60 (0.024) 0.30 (0.012) |
> 90 dB > 100 dB |
| GS8000-095 | Recommended Low |
0.85 (0.033) 0.50 (0.020) |
> 85 dB > 95 dB |
| GS8000-126 | Recommended Low |
1.40 (0.055) 0.60 (0.024) |
> 75 dB > 95 dB |
1 All measurements made using ARP-1705 modified test method through 3 GHz on 2 mm trace width