Arctic Silver / Alumina Thermal Adhesives Discontinued?

[Sidney_Stratton]

To be fair, Linus concludes his initial premise of thermal adhesive is not to be compared to a thermal transfer paste (or pad).

I’m no expert in such matters, but going over this thread got me ordering Arctic Silver 5 (NewEgg )

[luminarium_iaculator]

@Enderman

@luminarium iaculator

Thanks,

I have original JB weld like in your link… I don’t know… Maybe I’ll test it.

For other reply it is better in a case where you have 2 uneven, unprepared rough surfaces, and in a case where you don’t have MCPCB retaining ring screws etc…, also for fitting of certain heatsinks and LED emitters which can not be fitted with thermal pastes…

The thermal conductivity of something like Kryonaut or MX-4 is better significantly.
You just need to find a way to secure the thing down since it is not glue.
That’s what thermal pastes are specifically for, two uneven surfaces that need to transfer heat.

OMG Enderman?! :person_facepalming:

Try to fix 4715AS LED reflowed on copper DTP board with freaking MX-4 or better one(if there is better), and then you’ll see what will happen :smiling_imp:

“You just need”
Just is never “just”… Why would we do job a lot easier when we can unnecessary complicate things out?

Artic Alumina is the God of simple and an effective solution without to much math and complication…

[Enderman]

@luminarium iaculator

@Enderman

@luminarium iaculator

Thanks,

I have original JB weld like in your link… I don’t know… Maybe I’ll test it.

For other reply it is better in a case where you have 2 uneven, unprepared rough surfaces, and in a case where you don’t have MCPCB retaining ring screws etc…, also for fitting of certain heatsinks and LED emitters which can not be fitted with thermal pastes…

The thermal conductivity of something like Kryonaut or MX-4 is better significantly.
You just need to find a way to secure the thing down since it is not glue.
That’s what thermal pastes are specifically for, two uneven surfaces that need to transfer heat.

OMG Enderman?! :person_facepalming:

Try to fix 4715AS LED reflowed on copper DTP board with freaking MX-4 or better one(if there is better), and then you’ll see what will happen :smiling_imp:

“You just need”
Just is never “just”… Why would we do job a lot easier when we can unnecessary complicate things out?

Artic Alumina is the God of simple and an effective solution without to much math and complication…

What I’ve done before if just put thermal paste below and then added some drops of JB weld epoxy around the edges of the MCPCB to stick it to the heatsink.
I wouldn’t recommend Alumina for LEDs though, there’s a lot of heat that needs to be moved away from an MCPCB and if you want your LED to perform its best you can’t bottleneck the heat transfer with some cheap thermal paste or thermal epoxy.

Alumina was good for securing things like drivers and PCB components and such, where there isn’t tons of heat being produced.

[luminarium_iaculator]

@Enderman

hat I’ve done before if just put thermal paste below and then added some drops of JB weld epoxy around the edges of the MCPCB to stick it to the heatsink.
I wouldn’t recommend Alumina for LEDs though, there’s a lot of heat that needs to be moved away from an MCPCB and if you want your LED to perform its best you can’t bottleneck the heat transfer with some cheap thermal paste or thermal epoxy.

Alumina was good for securing things like drivers and PCB components and such, where there isn’t tons of heat being produced.

“put thermal paste below and then added some drops of JB weld epoxy around the edges of the MCPCB to stick it to the heatsink”

No! You did not did this with Osram 4715AS emitter because you would have one dead emitter in one click of a flashlight. It would work in that combination and paste but not with AS5 or MX5 paste. It would work only with electrically non conductive thermal paste (if there is any?).

I know you are perfectionist but I guess you know that 90% of budget China builds are done with Fujik? Well Artic Alumina is at least 5x better than that… Nice Permanent and very fast solution without any math. Even if it does not have better thermal properties than pastes it has enough thermal properties for anything up to 5A current draw.