Eccosorb® SF
Thin, Flexible, Resonant Microwave Absorber
RESONANT MICROWAVE ABSORBER
Eccosorb SF is a narrow banded, magnetically loaded resonant absorber sheet for free-space
applications. These silicone rubber sheets are designed to be bonded to flat or curved
metallic surfaces to reduce the reflectivity in a narrow band of frequencies. Eccosorb SF
reflects -20 dB or less of normally incident microwave energy at the design frequency in the
range of 1 to 26 GHz.
FEATURES AND BENEFITS
•
High power performance
•
Narrow band performance
•
Low outgassing properties
MARKETS
•
Commercial Telecom
•
Security and Defense
•
Automotive
SPECIFICATIONS
TYPICAL PROPERTIES
Max service temperature °C (°F)
Power Handling W/cm²
Hardness (Shore A)
Density Range g/cm³
Tensile Strength (MPa)
Elongation at break %
Tear Strength N/mm
ECCOSORB SF
163 (325)
0.2
73
2.4-4.5
1.0-6.0
20 - 100
0.2-2.0
Data for design engineer guidance only. Observed performance varies in application.
Engineers are reminded to test the material in application.
APPLICATIONS
•
Lining radar nacelles and the exterior of airframes particularly where high power is
present.
•
Lining of cavity backed and shrouded telecommunication antennas where narrowband
performance is required.
•
Lining metal surfaces of vehicles to reduce overall radar signature.
•
Attaching to masts of ships, walls, etc to reduce reflections and echoes from nearby
antennas.
•
Lining magnetron housings to prevent detuning.
•
Fabricating into tapered shapes for impedance matching in waveguide or microstrip
applications.
•
Lining metal surfaces to attenuate surface currents, suppressing reflections inside
microwave modules, and dampening cavity resonances in microwave modules.
•
For module interference, cavity resonance and surface current problems, ECCOSORB®
GDS, ECCOSORB® MCS and ECCOSORB® BSR are recommended due to their high magnetic
loss properties, broad band performance, as well as the availability of a wider range of
thicknesses (0.010” to 0.100”).
Americas: +1.866.928.8181
Europe: +49.(0)8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com
Eccosorb® SF
AVAILABILITY
•
•
•
•
Standard sheets are 305 x 305mm (12”x12”)
Thickness varies depending on resonant frequency desired.
Other resonant frequencies from 0.7 to 40 GHz can be supplied on special order
The material can also be supplied in customized shapes and can be supplied with a
pressure sensitive adhesive (PSA).
INSTRUCTIONS FOR USE
•
Eccosorb SF is designed to function directly in front of a metallic surface. If this is not the
case, a metallic foil should first be bonded to the object.
•
For optimum performance, material is recommended and can be supplied with a metal
backing (-ML)
•
To obtain a strong bond of the absorber to the object, clean the surface with a degreasing
solvent, apply a thin coat of primer to the dried surface and apply an RTV silicone
adhesive.
•
Eccosorb SF can be readily cut with a sharp knife and template.
It is a very flexible material and will conform to mild curvatures.
RELATED PRODUCTS
•
For corrosive environments, see Eccosorb DSF
®
•
For better abrasion resistance, see Eccosorb SF-U
®
Typical Reflectivity Performance
The performance of ECCOSORB® SF is defined by reflectivity at a single frequency. A generalized performance curve
is shown above. The design frequency f0, has a ±5% bandwidth, designated as f1 and f2. Although performance
degrades with increased incidence angle, at incident angles out to 45°, reflectivity of -16dB has been demonstrated.
RFP-DS-SF 081815
A
ny information furnished by Laird Technologies, Inc. and its agents is believed to be accurate and reliable. All specifications are subject to change without notice. Responsibility for the use and application of Laird Technologies materials rests with the
end user. Laird Technologies makes no warranties as to the fitness, merchantability, suitability or non- infringement of any Laird Technologies materials or products for any specific or general uses. Laird Technologies shall not be liable for incidental or
consequential damages of any kind. All Laird Technologies products are sold pursuant to the Laird Technologies’ Terms and Conditions of sale in effect from time to time, a copy of which will be furnished upon request. © Copyright 2015 Laird
Technologies, Inc. All Rights Reserved. Laird, Laird Technologies, the Laird Technologies Logo, and other marks are trademarks or registered trademarks of Laird Technologies, Inc. or an affiliate company thereof. Other product or service names may be
the property of third parties. Nothing herein provides a license under any Laird Technologies or any third party intellectual property rights.
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