A.L.M.T. Corp.

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Q&A: Heatspreader

What is the thermal expansion anisotropy of PCM and RCM?
It means that there is a difference in expansion coefficient depending on the rolling direction and the rolling vertical direction. We can also provide PCM and RCM with no anisotropy.
Can we purchase the material?
Basically, we do not sell materials. We sell parts with shape processing plus surface treatment (plating, etc.).
Is it possible to solder the material?
The material itself has no solder wettability, so surface treatment (Ni plating, etc.) is required.
Is it possible to purchase even small quantities?
Yes. Small quantities are also possible.
Can you deliver a prototype product quickly?
We try our best to respond to the delivery date customers request, so please contact us.
What does “30” of PCM 30 refer to?
The number attached to the back of PCM and RCM provides the Cu content percentage (wt%).
What does the number behind CPC indicate?
It shows the ratio of the layer thickness, Cu:* PCM : Cu.
For example, CPC 141 indicates Cu: PCM: Cu = 1: 4: 1.
Only CPC-300 indicates that the thermal conductivity is 300 W/mK.
* PCM: our designated name for copper molybdenum alloy
Is resist processing possible?
We support it if it is of the thermosetting type. For details, please contact us.
I would like to know the standard design guide (dimension accuracy, etc.)
Our sales staff will bring the design guide.