epoxy coating a driver board

[aljsk8]

Iwant to fill an rv7 type dealextreme driver with epoxy - as in just coat the electronics with it - would this have any harmful effects?

thanks

Alex

 

[NA8]

I always thought it would be fun to try this stuff as a non conductive, non capacitive, and thermally conductive coating.

https://www.fenix-store.com/product_info.php?cPath=25_88&products_id=432

 

[Handlobraesing]

I always thought it would be fun to try this stuff as a non conductive, non capacitive, and thermally conductive coating.

https://www.fenix-store.com/product_info.php?cPath=25_88&products_id=432

Arctic Alumina Adhesive.
A much better can be found here though. You don't get "free" in the sense of no separate shipping billing but you don't end up paying unit price with single unit shipping built in regardless of quantity.

http://www.sidewindercomputers.com/araltherad.html

 

[Bigsy]

Arctic Alumina Adhesive is only going to be effective at pulling heat away from the driver if used in a very thin layer between driver and some kind of heatsink.

As this isn't the case you may as well buy normal epoxy and save money.

 

[aljsk8]

ok - it looks like i need to ask again

the reasion im doing this is for shock protection and to keep the flimsy
wires from snapping off at the solder - im not interested in heat removal

so if i coat a board in artic alumina (which is what i have handy) would there be any bad effects - as in stops the board working

thanks

Alex

 

[Bigsy]

It's non conductive, so no.

 

[NA8]

the reasion im doing this is for shock protection and to keep the flimsy
wires from snapping off at the solder
Alex

GE makes an electronic grade silicone RTV that would be good for that kind of thing.

RTV162 - white paste
RTV167 - gray, high strength paste

Looks kinda expensive at the website where I saw it.

 

[NA8]

Arctic Alumina Adhesive is only going to be effective at pulling heat away from the driver if used in a very thin layer between driver and some kind of heatsink.

As this isn't the case you may as well buy normal epoxy and save money.

Wouldn't be surprised. I guess someone should lay out a strip of it and see how well it conducts heat (match or soldering iron).

 

[gravityz]

if the circuitboards contain high frequency switching(eg for boosting the voltage) it might not be such a good idea

while most epoxys are non conductive THEY DO HAVE A CAPACITIVE RESISTANCE.

this might screw up the timing because most of these capacitors are low capacity(nano farad)

if you do not know what i am talking about i suggest you start googling resistors and capacitors to see what they are and what they are made for.

if al the circuitry is inside a chip and there are no capacitors on the bozrd you might be save.

 

[Jay R]

At the sort of currents and voltages you are talking about I doubt it would have any effect other than to help the thermal conductivity.