Laird-Signal-Laird-Tech-78135074

Eccosorb® LS  

Lossy, Flexible, Foam Microwave Absorber  

LOSSY, FLEXIBLE FOAM ABSORBER  

Eccosorb LS is the most widely known, used, and recommended polyurethane foam  

absorber for both isolation/ insertion loss as well as cavity resonance

 

purpose. Eccosorb LS  

obtains its microwave properties via impregnation with a carbon black dispersion and is  

therefore electrically conductive. It is a cost efficient

 

solution for many applications over the  

thinner rubber absorbers.  

FEATURES AND BENEFITS  

MARKETS  



Flexible, foam material  



High loss, low density  



Tuned serie  



Commercial Telecom  



Test Boxes  



Security and Defense  



Sensor  

SPECIFICATIONS  

TYPICAL PROPERTIES  

Max. Service Temperature °C (°F)  

Frequency Range  

ECCOSORB LS  

90 (194)  

≥ 1 GHz  

Data for design engineer guidance only. Observed performance varies in application.  

Engineers are reminded to test the material in application.  

Attenuation  

(dB/cm)  

Relative Impedance  

(|Z|/Z

0

)  

3 GHz  

10 GHz  

3 GHz  

10 GHz  

LS-14  

LS-16  

LS-18  

LS-20  

LS-22  

LS-24  

LS-26  

LS-28  

LS-30  

1.0  

1.5  

3.2  

4.2  

7.4  

11  

1.7  

2.3  

4.7  

7.0  

14.9  

24  

0.83  

0.78  

0.69  

0.61  

0.55  

0.25  

0.18  

0.16  

0.13  

0.89  

0.87  

0.82  

0.78  

0.74  

0.44  

0.31  

0.27  

0.22  

USA: +1.866.928.8181  

Europe: +49.8031.24600  

Asia: +86.755.2714.1166  

16  

34  

20  

40  

24  

46  

APPLICATIONS  



Eccosorb LS is used to lower cavity Q’s in RF amplifiers, oscillators, cabinets containing  

microwave devices, computer housings, LNB’s and isolation of antennas by insertion loss.  



Eccosorb LS is also used to reduce surface currents on radiating elements and outer  

ground-plane type surfaces.  



Reflectivity of an object (metal or otherwise) can be reduced somewhat by applying one  

or more layers of Eccosorb LS to its surface.  

Eccosorb® LS  

Lossy, Flexible, Foam Microwave Absorber  

AVAILABILITY  



Standard sheets are 610mm x 610mm (24”x24”).  



Standard thicknesses are 3.2 mm (1/8”), 6.4 mm (1/4”), 9.5 mm (3/8”), 12.7 mm (1/2”),  

19.1 mm (3/4”).  



All Eccosorb LS types can be delivered in special sizes or customer specified configurations  

upon request. This includes die-cut and kiss cut parts to reduce installation labor by  

allowing quick assembly.  



Usually Eccosorb LS is supplied with a pressure sensitive adhesive.  



Upon special request, Eccosorb LS can be supplied with an anti-dust coating to prevent  

carbon fallout.  



It can also be supplied, upon request, with a coating to prevent moisture uptake in high  

humidity to moderately wet environments.  

INSTRUCTIONS FOR USE  



For optimal performance, Eccosorb LS should be bonded to a metallic surface.  



To obtain a strong bond, the surface should be thoroughly cleaned with a degreasing  

solvent.  



It can be securely bonded to itself or to other materials such as metal, wood and common  

plastic composites. Our specific Eccostock® foam adhesive is recommended or the self-  

adhesive version can be used.  



The material can be easily cut with a sharp knife, scissors or die.  

Approximate Insertion Loss at 3 GHz and 45°  

60  

LS-30  

LS-28  

50  

40  

30  

20  

10  

0

LS-26  

LS-24  

LS-22  

LS-20  

LS-18  

LS-16  

LS-14  

3.2  

6.4  

9.5  

12.7  

19.1  

USA: +1.866.928.8181  

Europe: +49.8031.24600  

Asia: +86.755.2714.1166  

Thickness (mm)  

RFP-DS-LS 070116  

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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