Datasheet

Eccosorb® LS
Lossy, Flexible, Foam Microwave Absorber
Americas: +1.866.928.8181
Europe: +49.(0)8031.2460.0
Asia: +86.755.2714.1166
www.lairdtech.com
LOSSY, FLEXIBLE FOAM ABSORBER
Eccosorb LS is the most widely known, used, and recommended polyurethane foam
absorber. Eccosorb LS obtains its microwave properties via impregnation with a carbon black
dispersion and is therefore electrically conductive. It is a very low cost solution for many
applications over the thinner, more expensive rubber absorbers.
FEATURES AND BENEFITS
• Flexible, foam material
• High loss, low density
• Very low cost
MARKETS
• Commercial Telecom
• Test Boxes
• Security and Defense
SPECIFICATIONS
TYPICAL PROPERTIES ECCOSORB LS
Max. Service Temperature °C (°F) 90 (194)
Frequency Range ≥ 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
1.0
1.7
0.83
0.89
LS
-
16
1.5
2.3
0.78
0.87
LS
-
18
3.2
4.7
0.69
0.82
LS
-
20
4.2
7.0
0.61
0.78
LS
-
22
7.4
14.9
0.55
0.74
LS
-
24
11
24
0.25
0.44
LS
-
26
16
34
0.18
0.31
LS
-
28
20
40
0.16
0.27
LS-30 24 46 0.13 0.22
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.