E
ehsjr
- Jan 1, 1970
- 0
I have a resistance circuit that dissipates ~1.2 watts. If I use
11 one watt resistors in series (physically parallel) I can spread
the heat out across the width of the board. I measured ~66C under
each resistor at worst case ambient (~32C) in the test setup.
What will happen to to the board over time (>10 years) of 24x7
operation? (Resistors in contact with the board.) Does FR4 behave
like wood that is exposed to temperature over time, slowly charring?
TIA,
Ed
11 one watt resistors in series (physically parallel) I can spread
the heat out across the width of the board. I measured ~66C under
each resistor at worst case ambient (~32C) in the test setup.
What will happen to to the board over time (>10 years) of 24x7
operation? (Resistors in contact with the board.) Does FR4 behave
like wood that is exposed to temperature over time, slowly charring?
TIA,
Ed