Author Topic: Aluminium PCB design  (Read 717 times)

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Offline Chris Mr

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Aluminium PCB design
« on: May 06, 2022, 08:59:49 am »
When you specify an aluminium PCB is it only possible to do it as if it were a "solder side only"?

It's just that for the board I want to do the tracks would be on the top surface (layer 2 / component side ?) and so text would be viewed the right way up.

Never done one before and want to try it out but it's not obvious which way up it should be....
 

Offline Chris Mr

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Re: Aluminium PCB design
« Reply #1 on: May 06, 2022, 09:33:51 am »
I just found out after ages on a chat...

It's the top layer that you use (at least at the one I tried).  So .GTL .GTS .GTO and GKO

 

Offline chris_leyson

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Re: Aluminium PCB design
« Reply #2 on: May 06, 2022, 09:59:15 am »
I had a look at Aluminium IMS (Insulated Metal Substrate) at Beta Layout PCB Pool recently. One thing that they cannot do is electrically connect top copper to the aluminium substrate, for example you might want to use the substrate as a ground layer. Apparently they also offer double sided IMS PCBs but I don't think you can electrically connect to the substrate.
 

Offline Ian.M

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Re: Aluminium PCB design
« Reply #3 on: May 06, 2022, 10:54:20 am »
See: https://www.eevblog.com/forum/projects/grounding-aluminium-pcb-substrate/

Its *possible* to ground the aluminum substrate, either as a rework operation, or by going up-market to a process that offers copper plating on the substrate, but its certainly not as simple as dropping vias to a ground plane anywhere you like on a multi-layer FR4 PCB.
 

Offline tepalia02

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Re: Aluminium PCB design
« Reply #4 on: May 12, 2022, 12:40:35 pm »
Since you're working with aluminium PCB design, I think this video will be a good reference:

https://www.pcbway.com/blog/PCB_Design_Tutorial/Aluminium_PCB_design_and_PCBA_service.html

It's regarding designing a circuit to control the temperature of an aluminium PCB. The language is not English. But the video is quite detailed and understandable.
 


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