Polytherm base material for effective heat management
Polytherm® is an optimized base material for LED applications. A thin layer, electrically insulating but highly heat-conducting, is placed on an aluminium base plate. On the opposite side, there is a layer of copper foil for forming the circuitry. Polytherm® materials are available with a high variety in thermal conductivity, copper foil thickness, dielectric thickness and aluminium thickness.
Polytherm® is also available with a massive copper base plate instead of aluminium and as flexible base material with thin aluminium and a thin and flexible dielectric.
Polytherm® – the solution
Polytherm® is ideal for PCBs whose functional assembly is likely to cause especially high heat generation – e.g. for PCBs with white LED diodes used for lighting purposes in the automotive industry. Polytherm® laminates consist of an aluminium base 0.3 to 3.2 mm thick, laminated on one side with a thin, ceramic-filled dielectric made of epoxy resin. The dielectric features a very high insulation resistance and other excellent physical properties and is placed under a copper foil 18 µm to 150 µm thick. Polytherm® can thus be processed as a single-sided PCB (print & etch) wherein the aluminium base serves both as cooling plate and “mass” – that is, functions like the power plane of a classic double-sided PCB.
|TC-Lam 1.3||1.3||0.77||130||≥ 5||100||600|
|TC-Lam 2.0||2.0||0.50||130||≥ 5||100||600|
|TC-Lam 1.8 (hoch Tg)||1.8||0.56||130||≥ 5||170||600|
|TC-Lam 3.0||3.0||0.33||130||≥ 5||100||600|
|TC-Lam 4.0||4.0||0.28||130||≥ 5||100||600|
|TC-Lam 5.0||5.0||0.23||130||≥ 5||100||600|