JCS Datasheet, PDF (1/2 Pages) jb Capacitors Company – Designed for surface mounting on high density circuit board

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Eccosorb® JCS
High Loss, Low Density, Flexible, Carbon-loaded,
Silicone Rubber Sheet
FLEXIBLE CARBON-LOADED SILICONE RUBBER SHEET
Eccosorb JCS is a carbon-loaded, silicone rubber sheet. It obtains its microwave properties
via a carbon loading system and is therefore electrically conductive. Eccosorb JCS is
waterproof and has excellent thermal characteristics, tolerating high and low temperatures.
Low out-gassing is assumed, but formal testing has not been completed yet. Material does
not flake or shed. Complex shapes are best cut with a water jet system.
FEATURES AND BENEFITS
• High loss
• Low density
• Very flexible
• Dust free
• High frequency applications
MARKETS
• Automotive
• Telecom
• Industrial
SPECIFICATIONS
TYPICAL PROPERTIES
Frequency range
Service Temperature °C (°F)
Thickness
Color
ECCOSORB JCS
6 – 100 GHz
-70 to 177 (-94 to 350)
0.50 mm - 3.18mm (0.020”-0.125’’)
Black
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
ELECTRICAL PROPERTIES
Eccosorb JCS is a pure dielectric absorber with no magnetic properties (permeability = 1).
The complex permittivity varies with frequency, see graphs below. Attenuation is a figure of
merit for the lossiness of absorbent material and should not be used to directly estimate
insertion loss.
Insertion loss is defined as the reduction in energy between point A and point B caused by
the insertion of a material. In general, insertion loss is a function of the material
electromagnetic parameters and the thickness. JCS can be custom tailored to many
different insertion loss values.
JCS-3
JCS-5
JCS-7
JCS-9
Attenuation (dB/cm)
3 GHz
2
4.5
8
10
10 GHz
3.5
9
16
20