[sdiy] Aluminium PCBs

[Ray Wilson]

Some pertinent info.

http://www.cofan-usa.com/mcpcb.php


----- Original Message ----- 
From: "cheater cheater" <cheater00 at gmail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, March 27, 2009 3:30 AM
Subject: Re: [sdiy] Aluminium PCBs


> What's this 'loss' thing?
>
> Nick: do you think that they would be good for oscillators, to
> maintain thermal inertia?
>
> D.
>
> On Thu, Mar 26, 2009 at 9:01 PM, Electronic Battle
> <electronicbattle at googlemail.com> wrote:
>>> I was running a quote through PCB Cart and got curious about their
>>> "special" PCBs. I can find little to no information on the Aluminium 
>>> Base
>>> PCBs. I guess my first question is why?
>>
>>
>> Maybe they meant to say "alumina" instead - meaning aluminium oxide 
>> ceramic
>> as a dielectric which is very low loss and thus suitable for high 
>> frequency
>> design (tens of GHz). Alumins is good at higher temperatures where it 
>> still
>> has low loss whereas plastics (e.g. Teflon chopped fibre and the like) 
>> gets
>> more lossy with rising temperature.
>>
>> EB
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>
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