Hello,
I am in the process of recapping my Luxman M03 and have removed the RHS board from the heat sink. My question is I am unable to source the MT-200 mica insulators for the 2SA1216 & 2SC2922 transistors here in Australia however can obtain a 0.2mm Mica insulation sheet (can take up to 500'C) to cut to the required shape. The Mt-200 of the shelf are apparently 0.12mm thick and I would like to know if the additional 0.08mm would cause any thermal issues with the Sankens?
Regards
I am in the process of recapping my Luxman M03 and have removed the RHS board from the heat sink. My question is I am unable to source the MT-200 mica insulators for the 2SA1216 & 2SC2922 transistors here in Australia however can obtain a 0.2mm Mica insulation sheet (can take up to 500'C) to cut to the required shape. The Mt-200 of the shelf are apparently 0.12mm thick and I would like to know if the additional 0.08mm would cause any thermal issues with the Sankens?
Regards
I'd replace that with keratherm red sheet cut to size, it has very good thermal performance, and you can cut whatever shape you want.
Is it real mica? Or mica-reinforced composition? You can mix mica flakes with binders and make a sheet good for electrical insulation, but does not conduct "through". That's no good for your purpose.
Since mica is getting scarce, the several products like Keratherm may better today.
Who is your online electronics parts supplier? What country? They should have transistor mounting bits.
Since mica is getting scarce, the several products like Keratherm may better today.
Who is your online electronics parts supplier? What country? They should have transistor mounting bits.
Have you tried splitting it with a very sharp blade? Mica is naturally layered and you can often split the sheet into thinner sheets.
If you didn't get "composition", I'm not going to re-quote the entire post for your understanding. Let it go.
Thanks everyone for the input and advice. I have managed to track down some NOS MT-200 mica gaskets that fit the Sankens this morning in Australia from a local repair shop.