PCMA2305 Phase Change Metal Alloy (PCMA)

[Deleted member 250678]

If anyone knows where one could purchase a sheet of PCMA2305 Phase Change Metal Alloy?

 

[FamousFighter]

That wont short the core?

 

[Deleted member 250678]

That wont short the core?

What do you mean?

P.S: I'm trying to get this particular PCMA2305, because I wish to get rid from Thermal Grizzly Conductonaut Liquid Metal Thermal Paste, because Conductonaut Liquid Metal sucks if compared with PCMA2305.

 

[LabRat 891]

I looked through a handful of their Americas vendors. Most-everyone only carried Indium's soldering products (if any public-facing products, at all).

You're best bet would likely be to reach out to the company, specifically asking/looking for a vendor/partner that sells their Thermal Interface Material products

Americas Sales | Contact Indium Corporation

Connect with our sales support team in the Americas, ready to assist you with innovative solutions and expertise.

www.indium.com

 

[Deleted member 250678]

I looked through a handful of their Americas vendors. Most-everyone only carried Indium's soldering products (if any public-facing products, at all).

You're best bet would likely be to reach out to the company, specifically asking/looking for a vendor/partner that sells their Thermal Interface Material products

Americas Sales | Contact Indium Corporation

Connect with our sales support team in the Americas, ready to assist you with innovative solutions and expertise.

www.indium.com

English is not my native language.
The one here must present him self in a very decent way, unfortunately with my poor english skill I can't do this.
May someone else with fluent English could call them?

Also, I'm from Italy.

 

[FamousFighter]

What do you mean?

P.S: I'm trying to get this particular PCMA2305, because I wish to get rid from Thermal Grizzly Conductonaut Liquid Metal Thermal Paste, because Conductonaut Liquid Metal sucks if compared with PCMA2305.

No worries but im worried that when it turns into a liquid it could short the card and basically kill it. It even warns that on the page labrat sent.

 

[LabRat 891]

English is not my native language.
The one here must present him self in a very decent way, unfortunately with my poor english skill I can't do this.
May someone else with fluent English could call them?

Also, I'm from Italy.

Indium Corporation is a nearly century old worldwide company

Europa, Medio Oriente, Africa (EMEA) Vendite | Contatto Indium Corporation

Collegatevi con il nostro team di assistenza alle vendite in Europa, Medio Oriente e Africa (EMEA), pronto ad assistervi con soluzioni innovative e competenza.

www.indium.com

No worries but im worried that when it turns into a liquid it could short the card and basically kill it. It even warns that on the page labrat sent.

Lacquer / conformal coat around the die / package or a gasket of self-vulcanizing Silicone are fairly-common mitigations for LM TIM application.

I'd hope they are aware of this risk since, they're already using/comparing with Conductonaut.


BTW, a similar-ish product was once available,

Coollaboratory Liquid MetalPad – Coollaboratory

www.coollaboratory.com

and PPCS out of FL, USA supposedly still has a stock.

https://www.performance-pcs.com/search?q=Coollaboratory+MetalPad

I'm not sure if there's any EU retailers that may also still have some.
Italy: https://www.drako.it/drako_catalog/advanced_search_result.php?keywords=coollaboratory

The issue w/ those 'pads' were uneven melting/ bonding.
I'm not sure if the issue was in the application, or inherent with the product, though.

 

[Deleted member 250678]

No worries but im worried that when it turns into a liquid it could short the card and basically kill it. It even warns that on the page labrat sent.

PCMA2305 never turns fully liquid, it turns in to quasi viscous state & compared with Liquid Metal the PCMA2305 is safer, because it doesn't react with any other metal, also with aluminum.
Meanwhile, Liquid Metal (which is basically nothing else but Galinstan, just rebranded under the name of Thermal Grizzly trademark) is another beast and it's also a pretty dangerous one.

1)Liquid Metal fully melts the aluminum;
2)Liquid Metal oxidize, so for this reason you need to reapply it every 6 months;
3)Liquid Metal amalgamates with naked copper,so If your heat sink is not nickel plated, but even if it is - it will amalgamate anyway, but more slowly.
This amalgamation is dangerous, because it grows tiny microscopic crystals which can hurt the silicon die surface underneath of your heat spreader.

 

[Simone]

... I like this... ':<

 

[Deleted member 250678]

BTW, a similar-ish product was once available,

Coollaboratory Liquid MetalPad – Coollaboratory

www.coollaboratory.com

and PPCS out of FL, USA supposedly still has a stock.
https://www.performance-pcs.com/search?q=Coollaboratory+MetalPad
I'm not sure if there's any EU retailers that may also still have some.
Italy: https://www.drako.it/drako_catalog/advanced_search_result.php?keywords=coollaboratory

In summary:
The entire thing from Coollaboratory sucks!
Here you have some proofs:

Liquid metal pad in a practice test - blessing or curse? How to safely achieve the magic burn-in! | Tutorial | igor´sLAB

After many attempts with various pads, I have once again taken up the subject of liquid metal pads. Because if you use it right, it’s a really smart thing. But the (supposed) hurdles are so high that…

www.igorslab.de

 

[FreedomEclipse]

Have you considered Thermal Grizzly Kryosheet ?

 

[Shrek]

Liquid Metal fully melts the aluminum;

It indeed makes a real mess of aluminum heatsinks, even if it doesn't melt the aluminum.

 

[phanbuey]

kryosheet is way better than that... try it i have it on my 4090 and 9800x3d and it outperforms stock thermal paste all day long. lasts forever.

 

[Deleted member 250678]

kryosheet is way better than that... try it i have it on my 4090 and 9800x3d and it outperforms stock thermal paste all day long. lasts forever.

Nice to know, but actually all my attention is only on PCMA2305, so now I can't live my life in peace without getting my hands exactly on this new super fancy toy!

 

[SyWillCry]

You're either going to have to contact the supplier/manufacturer directly, or get a knockoff from Aliexpress.

 

[Deleted member 250678]

You're either going to have to contact the supplier/manufacturer directly, or get a knockoff from Aliexpress.

Why only me?
Why not all together with the entire TechPowerUp forum???

 

[anonuser57]

If you call a distributor of Indium Corp. They should be able to sell you the product whether they list it online or not. The real issue is that you will likely have to buy some minimum quantity that is 100x more than you want. It is common for B2B distributors to not bother listing products they can sell you because maintaining pricing online is a pain and they don't actually keep inventory of the products they sell.

 

[Shrek]

What is the advantage of a phase change?

 

[Deleted member 250678]

What is the advantage of a phase change?

Documentation:

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I think that we need something like Phase Change Metal Alloy thermal interface, because computers are getting only hotter.
PCMA2305 never turns fully liquid, it only turns in to quasi viscous state & compared with Liquid Metal the PCMA2305 is safer.
1)it doesn't spill everywhere;
2)it doesn't melt your aluminum heat-sink;
3)it doesn't oxidize like LM, so you don't need to reapply it every 6 months;
4)Liquid Metal amalgamates with naked copper, so If your heat sink is not nickel plated, but even if it is - it will amalgamate anyway, but more slowly.
This amalgamation is dangerous, because it grows a layer of sharp crystals that damage the surface of your silicon die underneath the heat spreader.

PCMA2305 is a safer & better alternative compared to Galinstan aka Liquid Metal (rebranded under different names like: Conductonaut and so on...)
PCMA2305 offers better safety and nearly identical performance with liquid metal, but without the headache of liquid metal.

 

[Shrek]

Are you not concerned about the thickness?

 

[Deleted member 250678]

If you call a distributor of Indium Corp. They should be able to sell you the product whether they list it online or not. The real issue is that you will likely have to buy some minimum quantity that is 100x more than you want. It is common for B2B distributors to not bother listing products they can sell you because maintaining pricing online is a pain and they don't actually keep inventory of the products they sell.

If LinusTech talk from LTT sells TPM by Honeywell, then TechnoJesus Steve from GN could be the counterpart selling PCMA2305.

Are you not concerned about the thickness?

View attachment 406971

Not with PCMA2305, before applying the sheet make it smaller by 7 or 9% vs the square surface of your chip.
Place it exactly on the center and you're good to go.

But your pictures show it overhanging

View attachment 406973

It really depends only from how you wish to tune the tings around.
If you got pretty good sealing barriers, then you can apply it in the same size as your crystal.
Anyway, you're always free to tune & play around parameters as you wish.

 

[R-T-B]

I'm not sure if the issue was in the application, or inherent with the product, though.

I bought one of those in the LGA1366 era. It wasn't the same as the flat sheets I'm seeing here. They came as an oblong shaped indium "bead" in a weird pouch that you were supposed to place on the middle of your CPU. It would then melt and spread, supposedly. It never worked well, and pretty much glued your heatsink to the heatspreader for all eternity, in practice.

 

[Shrek]

Indium melts at 313.9°F (156.6°C)

Good to know it solders the heatsink to the CPU

 

[Deleted member 250678]

Indium melts at 313.9°F (156.6°C)

Meanwhile the PCM2305 alloy starts to melt at 59.5–72.6C°.

 

[freeagent]

The world needs more Thermalright coolers, that way you don't need stuff like this