6L6, would you be so kind to post a link(mouser/digikey) on these pink silpads you use, please? I can't find them in this(big) size... :-( I use aluminum oxide and I do not like the result, the transistor is noticeably hotter than the sink next to it. Maybe, you can even measure this temperature difference? Thanks!
They're individual pieces sized to fit TO-247 at 0.687"x0.562"
You can look for different options here:
Mouser Electronics - Catalog Viewer
You can look for different options here:
Mouser Electronics - Catalog Viewer
You really want the pink ones - the black have about 4 times less thermal conductivity...
The pink can be found here - SP900S-0.009-00-104 Bergquist | BER178-ND | DigiKey I assume Mouser has the same in stock.
The pink can be found here - SP900S-0.009-00-104 Bergquist | BER178-ND | DigiKey I assume Mouser has the same in stock.
In this case these should be the best: SP2000-0.015-00-104 Bergquist | BER200-ND | DigiKey
oh. i've missed this tread 6L6 you will reach the chassis max before the amp's max
with +/-32V and 1.9A bias(standar V2) thats about what that chassis can handle without external cooling of some sort.
for +/-45V+ even a monoblock will have broblems when you bias it up to "full" power.
with +/-32V and 1.9A bias(standar V2) thats about what that chassis can handle without external cooling of some sort.
for +/-45V+ even a monoblock will have broblems when you bias it up to "full" power.
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Some experience about thermal pads:
we discussed earlier these two:
SP900 has 1.6 W/(mK) @ .23mm thickness
SP2000 has 3.5 W/(mK) @ .38mm thickness
To not be speculative I bought two of them and tried. SP2000 are much better pads. I do not trust my thermocouple from DMM in terms of super accuracy, but with SP2000 TO-247 case of F5 is about 5C cooler.
we discussed earlier these two:
SP900 has 1.6 W/(mK) @ .23mm thickness
SP2000 has 3.5 W/(mK) @ .38mm thickness
To not be speculative I bought two of them and tried. SP2000 are much better pads. I do not trust my thermocouple from DMM in terms of super accuracy, but with SP2000 TO-247 case of F5 is about 5C cooler.
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