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Thermal Conductive Tapes

(Keratherm®)

The constantly increasing technical demands on electrical and electronic assemblies lead to major challenges in the area of thermal management. Due to the miniaturization of components and the higher performance of devices, component temperatures would increase significantly without countermeasures, which can lead to the failure of the entire assembly. In order to increase the longevity of electronic components, heat must therefore be conducted from the heat source (electronics) to the heat sink (e.g. heat sink). Thermally conductive and electrically insulating intermediate layer materials, so-called Thermal Interface Materials (TIMs), are used for this purpose. KERAFOL® has developed effective, uncomplicated and cost-effective solutions in this area with the KERATHERM® and KERAMOLD® product ranges. One of the best-known product groups are the so-called Thermal Conductive Tapes.
Keratherm® 86/37
Keratherm® 86/50

What are Thermal Conductive Tapes?

an explanation

Thermal Conductive Tapes (KERATHERM®) are highly thermally conductive and electrically insulating films based on silicone, polyurethane or epoxy. These materials are particularly suitable for generating an efficient heat transfer from the heat source (e.g. semiconductor) to the heat sink (e.g. heat sink), especially with low component tolerances, due to their low layer thickness of 100 to 500 µm. The simultaneously very high electrical insulation strength prevents electrical breakdowns and flashovers. To increase the mechanical stability, certain films can be provided with a glass fiber reinforcement; in addition, a one-sided adhesive coating can be applied as a fixing aid in the application according to customer requirements.

Key Facts

to the Thermal Conductive Tapes from KERAFOL®

  • Thermally conductive and electrically insulating at the same time
  • Used for small component tolerances and gap dimensions in the range of 0.1 to 0.5 mm
  • Various designs possible (with glass fiber reinforcement and/or adhesive coating)
  • Available by the meter on rolls and/or specifically cut to size
  • Different polymer bases possible, silicone-containing and silicone-free
Keratherm® 86/82
Keratherm® L 86/50 PEEK

How are Thermal Conductive Tapes processed?

Application

In addition to unpunched roll goods, KERAFOL® also offers cut-to-size parts, which can be separated according to customer requirements using various separation systems. The systems required for this are selected on the basis of years of experience according to the application and quantity. There are also various options for the delivery form. Punching waste can be removed on request and various cover foils can be used. Cover and carrier foils are used to protect the heat conducting foils from dust and dirt. These must be removed on site at the customer’s premises immediately before the pad is applied to the electronic component or heat sink.

Despite the thin layer thickness, the films can be easily removed from the carrier film, which simplifies the manual application step. If more stability is required in relation to the film during the application process, KERAFOL® also offers the Thermal Conductive Tapes with a glass fiber reinforcement and/or an additional adhesive coating on one side. In the case of fully automated application, so-called “pick and place systems” can be used.

Further information on processing and separation techniques can be found in the KERAFOL® service section.

Keratherm® 86/30

Application Note

KERATHERM® Thermal Management Solutions

Application-Note

Advantages

of the Thermal Conductive Tapes from KERAFOL®

  • Wide range of thermal conductivity (up to 6.5 W/mK) and layer thicknesses (0.1 mm to 0.5 mm) with high electrical insulation at the same time
  • Available with glass fiber reinforcement and/or adhesive coating
  • Very good thermal properties, even at low contact pressure
  • Low Shore hardness (Shore A)
  • Good availability
  • Available by the meter on rolls and/or specifically cut to size
  • Very good long-term and temperature resistance
  • Different polymer bases possible, silicone-containing and silicone-free
  • 100% Made in Germany

Delimitation

to other products

Compared to gap pads, heat conducting foils are somewhat harder (Shore A instead of Shore 00 range).

Thermal Conductive Tapes are a very efficient solution, especially for small gap dimensions and low tolerance chains, due to their low layer thickness and the resulting low thermal resistance.

Thermal Conductive Tapes have a major advantage over heat conducting pastes, particularly when it comes to handling, as the processing of precisely fitting components is much quicker and easier than is the case with liquid materials.

Keratherm® 86/50

Comparison

Thermal Conductive Tapes from KERAFOL®

zur Gesamtübersicht

86/25

Keratherm®

  • high thermal conductivity
  • high electrical insulation
  • easy handling
  • optionally available with adhesive coating

86/30

Keratherm® white

  • Good thermal conductivity
  • Available with adhesive coating
  • Reinforcement with fi berglass possible

86/37

Keratherm® green

  • High electrical insulation
  • Cost effective solution
  • Available with adhesive coating
  • Reinforcement with fi berglass possible

86/50

Keratherm® pink

  • High thermal conductivity
  • Available with adhesive coating
  • Reinforcement with fi berglass possible

L 86/50 – PEEK

Keratherm®

  • Double layer material
  • High electrical insulation
  • Higher thermal performance in comparison to comparable hybrid films
  • No removal of a carrier film require

86/60

Keratherm®

  • High thermal conductivity
  • High electrical insulating
  • Available with adhesive coating

86/82

Keratherm® red

  • High thermal conductivity
  • High electrical insulating
  • Available with adhesive coating

U85

Keratherm®

  • silicone free thermal tape
  • Silicone free (Epoxy)
  • High temperature stability
  • Good ratio between thermal performance and electrical insulation
  • Non sticky, available with adhesive coating

U80 & U90

Keratherm®

  • silicone free thermal tape
  • Silicone free (polyurethane)
  • Very high thermal performance
  • Good ratio between thermal performance and electrical insulation
  • Softening effect for an additional increase in heat output
  • Non sticky, available with adhesive coating

Applications

of Thermal Conductive Tapes

  • In many power electronics applications and many other electronic assemblies
  • TO housing
  • For small component tolerances / gap dimensions

Energy

Automotive & Mobility

Consumer Market

Industry

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