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). 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.
Benefits of GORE
®
EMI Shielding
Materials — GS8000 Series
• Unsurpassed shielding effectiveness and minimal DC
resistance with low compressive force and broad range
of tolerance take-up
• Reliable electrical performance over wide range of gap
distances from soft foam construction
• Effective shielding performance in trace widths as
narrow as 1 mm
• Improved design flexibility because of low closure force
Table 1: Environmental and Mechanical Properties
Property
Temperature range
RoHS Status (lead, cadmium,
hexavalent chromium, mercury, bromine)
Flammability in accordance with UL 94
horizontal burn method
Halogen levels
(measured per BS EN 14582:2007)
Chlorine
Bromine
Fluorine
Iodine
Typical working range (for grounding pads)
Typical working range (for EMI gaskets)
Typical pressure to recommended
compression stop (RCS)
Value
- 45°C to 85°C
Pass
Pass
< 50 ppm
< 50 ppm
< 50 ppm
< 50 ppm
0.15 mm to 2.2 mm
( 0.006" to 0.087")
0.15 mm to 1.4 mm
( 0.006" to 0.055")
20 to 50 psi
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
Typical Applications
•
•
•
Portable electronic devices, mobile phones, and GPS
Portable computers
Hand-held field testing equipment
Page 1
GORE EMI Shielding
®
MATERIALS
GS8000 SERIES — Gaskets
and Grounding Pads
Extended Service Heights
The GS8000 Series of GORE EMI Shielding Materials performs well
in both grounding and EMI shielding applications. Gore recommends
using each variant within a range of service heights (gap distances).
For shielding applications, Gore recommends a smaller service height
range than for grounding applications to ensure a robust EMI seal.
®
Figure 1: Recommended Service Heights for Use
in EMI Gasket Applications
1.50
1.35
1.20
Gap Distance (mm)
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0.00
0.30 mm @ 50 psi
0.30 mm @ 95 psi
0.15 mm @ 325 psi
0.60 mm @ 15 psi
0.60 mm @ 75 psi
0.50 mm @ 100 psi
0.85 mm @ 20 psi
1.40 mm @ 5 psi
The low closure force and broad range of tolerance take-up results in
multiple product choices for some gap distances. Selecting the most
suitable variant for a given application depends on:
1. Gap distance of the housing that needs to be filled
2. Compression force required to achieve the specified gap distance
3. Required DC resistance for grounding applications (or required
shielding effectiveness for shielding applications) at a specified
gap distance
Figure 1 and Figure 2 show recommended service heights (gap
distances) for each variant.
GS8000-03X
GS8000-063
GS8000-095
GS8000-126
GS8000 Series
Figure 2: Recommended Service Heights for Use
in Grounding Pads
2.40
2.25
2.10
1.95
1.80
1.65
1.50
1.35
1.20
1.05
0.90
0.75
0.60
0.45
0.30
0.15
0.00
2.20 mm @ 1 psi
Pressure and DC Resistance
Three of the variants among the GS8000 Series provide conductivity
when compressed to 0.6 mm (0.24 in); however, the amount of
pressure and DC resistance varies for each. Table 2 shows the values
for each of these three variants.
Gap Distance (mm)
Table 2: Pressure and DC Resistance Values
at 0.6 mm Gap
(data taken from Figures 3 – 6)
Variants
GS8000-063
GS8000-095
GS8000-126
Pressure Required (psi)
15
55
75
DC Resistance (ohms)
0.03
0.02
0.01
1.20 mm @ 5 psi
0.90 mm @ 5 psi
0.45 mm @ 10 psi
0.60 mm
@ 15 psi
0.85 mm
@ 20 psi
1.40 mm
@ 5 psi
0.50 mm @ 100 psi
0.30 mm
@ 50 psi 0.30 mm @ 95 psi
0.15 mm @ 325 psi
0.60 mm @ 75 psi
GS8000-03X
GS8000-063
GS8000-095
GS8000-126
GS8000 Series
Table 3: Product Specifications
Variants
Weight
(g)
0.008
0.010
0.011
0.013
(measured on 5 x 5 mm grounding pads)
Compression Stop
mm (in)
Pressure to Achieve
Compression
(psi)
10
50
325
5
15
95
5
20
100
1
5
75
Initial DC
Resistance
(ohms)
0.245
0.125
0.015
0.070
0.025
0.007
0.115
0.040
0.010
0.240
0.150
0.012
Recovered
Thickness
mm (in)
1
0.56 (0.022)
0.38 (0.015)
0.25 (0.010)
1.19 (0.047)
0.91 (0.036)
0.51 (0.020)
1.65 (0.065)
1.24 (0.049)
0.74 (0.029)
2.62 (0.103)
1.90 (0.075)
0.94 (0.037)
GS8000-03X
GS8000-063
GS8000-095
GS8000-126
1
High
Recommended
Low
High
Recommended
Low
High
Recommended
Low
High
Recommended
Low
0.45 (0.018)
0.30 (0.012)
0.15 (0.006)
0.90 (0.035)
0.60 (0.024)
0.30 (0.012)
1.20 (0.047)
0.85 (0.033)
0.50 (0.020)
2.20 (0.087)
1.40 (0.055)
0.60 (0.024)
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.
Page 2
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 4).
Table 4: Shielding Effectiveness
1
Variants
Recommended
Compression Stop
mm (in)
High 0.30 (0.012)
Low
Low
Low
Low
0.15 (0.006)
0.30 (0.012)
0.50 (0.020)
0.60 (0.024)
High 0.60 (0.024)
High 0.85 (0.033)
High 1.40 (0.055)
Pressure
Shielding
to Achieve
Compression Effectiveness
1
(psi)
50
325
15
95
20
100
5
75
> 50 dB
> 65 dB
> 90 dB
> 100 dB
> 85 dB
> 95 dB
> 75 dB
> 95 dB
DC Resistance (Ohms)
GS8000-03X
GS8000-063
GS8000-095
GS8000-126
1
Figure 3: GS8000-03X Force Displacement Resistance
(testing with 5 x 5 mm grounding pads)
0.25
0.20
0.15
0.10
0.05
0.00
mm 0.45
in 0.018
350
Pressure (psi)
Pressure (psi)
300
250
200
150
100
50
0.40
0.016
0.35
0.014
0.30
0.012
0.25
0.10
All measurements made using ARP-1705 modified test method through 3 GHz on
2 mm trace width
Compressed Gap
0
0.20
0.15 mm
0.008
0.006 in
Pressure
DC Resistance
Figure 4: GS8000-063 Force Displacement Resistance
(testing with 5 x 5 mm grounding pads)
0.25
0.20
DC Resistance (Ohms)
350
300
250
0.15
0.10
0.05
0.00
mm 0.9
in 0.035
200
150
100
50
0.8
0.031
0.7
0.028
0.6
0.024
0.5
0.020
0
0.4
0.3 mm
0.016
0.012 in
Pressure
DC Resistance
Compressed Gap
Page 3
GORE EMI Shielding
®
MATERIALS
GS8000 SERIES — Gaskets
and Grounding Pads
Ordering Information
The GS8000 Series of GORE
®
EMI Shielding Materials are
available as custom die-cut gaskets, strip gaskets, and
grounding pads. To order or specify GS8000 grounding pads
and custom die-cut gaskets, contact Gore for assistance.
Standard strip gaskets (as seen in Table 5) are available
through several distributors. Go to gore.com/emidistribu-
tors for the list. These strip gaskets are packaged on
15 meter rolls. For other available strip gasket configura-
tions, contact Gore for assistance.
Figure 5: GS8000-095 Force Displacement Resistance
(testing with 5 x 5 mm grounding pads)
0.25
0.20
DC Resistance (Ohms)
350
300
Pressure (psi)
250
0.15
0.10
0.05
0.00
mm 1.2
in 0.47
200
150
100
50
1.1
0.43
1.0
0.39
0.9
0.35
0.8
0.31
0.7
0.28
0
0.6
0.5
0.24
0.20
Pressure
DC Resistance
Table 5: Strip Gasket Ordering Information
Part Number
EDR-80-03X-0500-SC
EDR-80-03X-0250-SC
EDR-80-03X-0125-SC
EDR-80-063-0500-SC
EDR-80-063-0250-SC
EDR-80-063-0125-SC
EDR-80-095-0500-SC
EDR-80-095-0250-SC
EDR-80-095-0125-SC
Pressure (psi)
Variants
GS8000-03X
GS8000-03X
GS8000-03X
GS8000-063
GS8000-063
GS8000-063
GS8000-095
GS8000-095
GS8000-095
GS8000-126
GS8000-126
GS8000-126
Width
0.500"
0.250"
0.125"
0.500"
0.250"
0.125"
0.500"
0.250"
0.125"
0.500"
0.250"
0.125"
Compressed Gap
Figure 6: GS8000-126 Force Displacement Resistance
(testing with 5 x 5 mm grounding pads)
0.25
0.20
DC Resistance (Ohms)
350
300
250
0.15
0.10
0.05
0.00
mm 2.2
in 0.087
200
150
100
50
2.0
0.079
1.8
0.071
1.6
0.063
1.4
0.055
1.2
0.047
1.0
0.039
0
0.8
0.6 mm
0.031 0.024 in
Pressure
DC Resistance
EDR-80-126-0500-SC
EDR-80-126-0250-SC
EDR-80-126-0125-SC
Compressed Gap
NOTICE — USE RESTRICTIONS APPLY
Not for use in food, drug, cosmetic or medical device
manufacturing, processing, or packaging operations.
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