High power transistor insulation gasket, with mica insulation sheet, or silicone insulation plate
Mica insulation sheet, because its thermal performance is higher than the silicone insulation film, but more brittle mica is easily damaged, so the silicone insulation sheet for more.
I think mica is better insulated. In addition to insulation, silica gel also has thermal conductivity. The insulation strength of silica gel film is related to its composition and thickness
Is the silicone insulation piece. Because its thickness is thin, easy to heat transfer.