This got me wondering, Is there also a difference in thermal design between various end product types?Ӕ I have to say that the answer, like it or not, is yes, at least with regard to the TIM material. The applications I see most commonly are very critical ones-military, medical, etc. This is likely due to the reliability my products can handle, but there is certainly still a difference. The auto devices require very thorough testing before any material is specified into the device while less critical applications, require less-strenuous life testing, which a wider variety of TIM materials are capable of passing.