Electronics > Beginners
Tooth paste thermal paste corrosion
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lordvader88:
I have about 50mL of thermal paste for CPU's, in a needle, but I can't find. So on a 2n3055 I used toothpaste, between the heatsink, and insulator.


It never shorted. There are 2 dark brown rings around the outside, of the insulated circles, where the base and emitter pins emerge. Something has chemically reacted.
Towger:
Probably water in the toothpaste.
Zinc oxide creams would probably be a better household substitute, of the type uses on babies bottoms. Eg Sudocrem
https://en.m.wikipedia.org/wiki/Sudocrem
Dabbot:

--- Quote from: lordvader88 on July 20, 2019, 05:59:02 am ---... I used toothpaste, between the heatsink, and insulator.

--- End quote ---


--- Quote from: lordvader88 on July 20, 2019, 05:59:02 am ---Something has chemically reacted.

--- End quote ---

This is amazing. Did your "toothpaste" taste funny this morning?
lordvader88:
I should take a picture, can I upload it directly upload it off my PC? I think I can and did that on here  before
tggzzz:

--- Quote from: lordvader88 on July 20, 2019, 06:42:30 am ---I should take a picture, can I upload it directly upload it off my PC? I think I can and did that on here  before

--- End quote ---

Don't bother. It won't show anything surprising or interesting.
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