Keratherm - Ferrite

Thermal conductivity λ. W/mK. 1.0. 0.6. Dielectric breakdown Ed; ac. KV/mm. 4.0. 0.4. Hardness. Shore A. 95. 55. Viscosity. mPas. 80000. 25000. Densi...

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Stegenthumbach 4 - 6 92 676 Eschenbach

Tel.: (0 96 45) 88-300 Fax: (0 96 45) 88-390

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Hightech aus der Oberpfalz

Keramische Folien GmbH

Keratherm® - Ferrite Keramold® (compound) Applications:


EMC - shielding power supply interference suppression motor engine interference suppression




Colour component A Colour component B Mix ratio A : B Thermal conductivity λ Dielectric breakdown Ed; ac Hardness Viscosity

W/mK KV/mm Shore A mPas g/cm³ Density ρ Drip time at room temperature Min. Shrinkage % Application temperature °C Curing time at 80°C Min.




PU basis

silicone basis

white black 4:1 1.0 4.0 95 80000 2.35 85 ca. 1 -40 to +100 30

black black 1:1 0.6 0.4 55 25000 2.40 85 <1 -40 to +180 30

Keramold® consists of a two-component ferrite-sealing compound and is used to encapsulate or embed electronic components. Both components are already packed in the correct mixed proportions.

ohne Keramold


Keramold shields electronic assemblies, acts as an electrical insulator, dissipates heat extremely well and exhibits very low shrinkage. The solvent-free Keramold® is characterized by its high mechanical strength and good impact and vibration protection.


Shield factor as function of the frequency at different thicknesses shield factor (%)

60 50 40 30 20 10 0 0,5



2,5 3,5 frequency (MHz)

2,0 mm


shield factor at 5 Mhz (%)

mit Keramold

Shield factor as function of the thickness at 5 MHz 60 50 40 30 20 10 0










thickness (mm)

4,0 mm

5,0 mm

10,0 mm

15,0 mm

The data presented in this leaflet are in accordance with the present state of our knowledge. All statements, technical information and recommendations herein are based on tests we believe to be reliable. The customer is thereby not absolved from carefully checking all supplies immediately on receipt. The recommendations made in this catalogue should be checked by preliminary trials because of conditions during processing over which we have no control, especially where other companies' raw materials are also being used. Before using, user shall determine the suitability of the product for its intended use, and the user assumes all risks and liability whatsoever in connection there with. We reserve the right to alter product constants within the scope of technical process or new developments. The recommendations do not absolve the customer from the obligation of investigating the possibility of infringement of third parties right and, if necessary, clarifying the position. Sellers' and manufacturer' only obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable either in tort or contract for any loss or damage, direct or incidental, or consequential, including loss of profits or revenue arising out of the use or the inability to use a product. No statement, purchase order or recommendations by seller or purchaser not contained herein shall have any force or effect unless in an agreement signed by the officers of the seller and manufacturer. last updated: 08/2009