Will using Neutral cure Silicone be fine on circuits?

[LiveOrDie]

I have some Parfix 300g All Purpose Silicone which has a temp rating up to 150c will it be fine to use on circuits, What I'm looking to do it cover the VRMs on my 4770K which are next to the DIE so there protected as the paste im using is conductive? I heard people using nail polish which i think isn't to smart seeing it flammable.

 

[Swamp Monster]

Some types of silicone sealant contains some acid to cure faster and may be corrosive. This one says neutral cure so it might be ok.
Advice: be aware that if you cover VRM's with silicone they may overheat.

 

[lilhasselhoffer]

Highly flexible as well ass mould and UV resistant, Parfix All Purpose Silicone is suitable for use on shower screens, metal roofing, concrete and gutters.

That is an absolute WTF English moment there.

This is not a good idea. Silicone is a huge resistor when it comes to heat transfer, this is why it is used to caulk windows. Even assuming an extremely thin layer, those VRMs get hot.

Nail polish, once hardened, isn't flammable. There are a variety of components which keep it liquid. These components evaporate when exposed to the atmosphere, leaving behind a tough shell that is not flammable. Given that nail polish tends to produce a thinner layer of material, I'd use it above silicone.

 

[McSteel]

Yeah, try to refrain from very efficiently thermally insulating your VRM, because that's a really good and dependable way of killing your CPU quickly. You could actually use a thin non-conductive thermal pad if you can get one, especially if you can get it to contact your heatsink properly; a win-win scenario.

 

[LiveOrDie]

i used some circuit board lacquer seem to work well.

 

[Jetster]

No

 

[silentbogo]

Burn baby burn

VRM's get really hot, and your silicone will seal the heat. Try using less thermal paste, because this is no good for the chip itself.
You'll only need about a drop.

 

[LiveOrDie]

i used circuit board lacquer which doesn't effect any transfer of heat its just a clear coat.

 

[pr0n Inspector]

I'm pretty sure the voltage regulators is part of the chip, what you see under the lid and next to the chip are ceramic capacitors. Or do you mean the ones on the motherboard?

 

[LiveOrDie]

Chip haswell vrms are on the cpu.

 

[pr0n Inspector]

Well most of the circuitry has been merged into the cpu die itself, even the inductors, but not capacitors. those yellow/brown little things are ceramic capacitors. They serve the same functions as those polymer capacitors on the motherboard.

 

[LiveOrDie]

They don't get hot so there no problem covering them.

This stuff i used even if it gets hot it wont catch on fire you can solder though it.

 

[pr0n Inspector]

Is it in a spray can?

That looks like a thin coat but I guess the heatsink is quite far away(relatively speaking) from them anyway.

 

[LiveOrDie]

Yer its was a spray can, I taped it up and soaked it that's actually a really think cost for how thin the spray is, The contracts are well covered.