​​ETS-Lindgren High Power Microwave Absorber is fabricated from high temperature materials. The pyramidal-shaped substrate is coated with a conductive polyimide resin film, the highest temperature polymer available.                       

The substrate used is a nylon honeycomb material, which is stable up to a temperature of 250°C (482°F). Due to the honeycomb structure and high temperature materials used, "pump-down" for high vacuum applications is rapid with low out gassing. The flammability of HP Series Absorber is substantially lower than for conventional microwave absorbers, the material being quite difficult to ignite. If ignited, the EHP HP Series Absorber will self-extinguish quickly after removal of the ignition source.

Key Product Information


Specifications Select a tab below for more information



Maximum Reflections at Normal Incidence


​80 MHz
120 MHz​
200 MHz​300 MH​z
​500 MHz
1-2 GHz​
2-4 GHz​
4-8 GHz​
8-12 GHz​
12-18 GHz​
​18-40 GHz
​HP3PCL



-25 dB
-35 dB
-40 dB
-40 dB
​HP5PCL
-25 dB
-35 dB
-40 dB
-45 dB
-45 dB
​HP8PCL

​-25 dB
-35 dB
-40 dB-45 dB
-45 dB
-45 dB
​HP12PCL

-30 dB
-35 dB
-40 dB
-45 dB
-45 dB
-45 dB
​HP18PCL
​-25 dB
-35 dB
-40 dB
-45 dB
-45 dB
-45 dB
-45 dB
​HP24PCL
​​-15 dB​
​​-25 dB​
​-30 dB
-35 dB
-45 dB
-45 dB
-45 dB
-45 dB
-45 dB







 

Dimensions by Model
ModelOverall HeightBase HeightPyramid HeightNominal WeightPyramids Per Absorber
HP-3PCL8.25 cm   (3.25 in)1.9 cm   (0.75 in)6.4 cm   (2.52 in)1 kg   ( 2.20 lb )256
HP-5PCL12.7 cm   (5.00 in)2.5 cm   (0.98 in)10.2 cm   (4.02 in)1.6 kg   ( 3.53 lb )144
HP-8PCL26.1 cm   (10.28 in)5.1 cm   (2.01 in)16.5 cm   (6.50 in)2.8 kg   ( 6.17 lb )64
HP-12PCL31.1 cm   (12.24 in)5.7 cm   (2.24 in)25.4 cm   (10.00 in)3.8 kg   ( 8.38 lb )36
HP-18PCL46.4 cm   (18.27 in)5.7 cm   (2.24 in)40.6 cm   (15.98 in)4.6 kg   ( 10.14 lb )16
HP-24PCL61 cm   (24.02 in)10.2 cm   (4.02 in)50.8 cm   (20.00 in)6.1 kg   ( 13.45 lb )9

Key Features


  • Extremely Low Flammability
  • Fire Retardant
  • Numerically Optimized Design
  • Rapid "Pump-down" for High Vacuum Applications
  • Honeycomb Structure
  • Stable up to 250°C (482°F)

Literature and Videos


Date Last Updated: Thursday, May 9, 2019
L o a d i n g

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