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The thermal resistance from junction to case (Top and Bottom) of LTM4644

Question asked by Lvzp on Apr 18, 2018
Latest reply on May 15, 2018 by Lvzp

Dear enginneer

I want to estimate the thermal dissipation of LTM4644 on my own design. The product is used in the vacuum environment with a heat sink block. But there is no thermal resistance from junction to case(Top and Bottom) in the datasheet except the Rth(j-a). I need the Rth(j-c) to complete the estimation. 

 

Thank you!

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