SIEPEL ASI Silicone Absorber

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  • Matrix: Silicone resin
  • Load: Magnetic powder
  • Colour: grey
  • Installation: to be glued on metallic support
  • Power handling: 0.9 W/cm2 CW
  • Max. service temp.: -60°C to 140°C
  • Dimensions: Tiles 300 x 300 mm (+ 0/-5) - the thickness depends on the frequency of use
  • Chemical resistance: Good resistance to salty environment and ozone

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SIEPEL ASI Silicone Absorber

ASI is a thin and flexible absorber sheet made of elastomer silicone resin and combined with magnetic load.


ASI are narrowband resonant absorbers. They provide a reflectivity of from – 25 to -30dB at resonance frequencies and – 20 dB on a bandwidth as wide as 10 % of the central frequency. They can be tuned on any frequency between 1.5 and 24 GHz, by optimization of the thickness and load concentration.


Their raw materials are compliant to RoHS/REACH and free of substances in the current list of Substances of Very High Concern (SVHC) published by the European Chemicals Agency (ECHA).