metal clad you might get stuck with low No. of layers - if you can  
get away with single layer HDI, but your dielectric need to be  
"special" (not every vendor's a cup of tea).  LTCC or HTCC would be  
the better or cheaper candidate.  my 1.8 cents.
                           jk
On Oct 8, 2014, at 7:27 PM, Stadem, Richard D. wrote:

> You could even consider clad aluminum. But I encourage you to talk  
> to the folks at Bergquist.
> Another company who has a LOT of experience in high thermal  
> applications is Analog Technologies. They build clad copper,  
> aluminum, and ceramic assemblies on a daily basis and are quite  
> expert at it. We have used them to design substrates for extremely  
> hot and harsh environments and they have done a great job at that.  
> www.analog-tech.com
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Creswick
> Sent: Wednesday, October 08, 2014 5:37 PM
> To: [log in to unmask]
> Subject: Re: [TN] High Temperature Laminate
>
> DBC on alumina is indeed a very good candidate, but so can hermetic  
> HTCC [High Temp Co-fire Ceramics] and LTCC ceramics [Low Temp Co- 
> fired Ceramics]
> - depending upon the power dissipated in the circuit, etc.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
> Sent: Wednesday, October 08, 2014 4:13 PM
> To: [log in to unmask]
> Subject: Re: [TN] High Temperature Laminate
>
> No. That is a job for ceramic-based clad laminate. The experts in  
> that material are Bergquist.
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Jackson
> Sent: Wednesday, October 08, 2014 2:57 PM
> To: [log in to unmask]
> Subject: [TN] High Temperature Laminate
>
> Hi All,
>
> We are looking for help tracking down a copper clad dielectric  
> capable of surviving in continuous temperatures of 200^o C - 260^o  
> C. Our PCB laminate suppliers have not been able to provide  
> anything which will work for more than 60 minutes at these  
> temperatures. Can anyone recommend a product which is capable and  
> commercially available?
>
> Thanks in advance,
> Paul Jackson
> Omni Circuit Boards
> (855) 798 9717
>
>
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