Homebrew PCBs

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Wednesday, April 07, 2004 10:06 AM
Subject: [Homebrew_PCBs] tqfp package with TT?


> Hi,
> 
> 
> I bought a few ICs at ebay, very cheap, but some have tqfp case....
> 
> the pin to pin spacing is 20mil i believe, it are 100 pins.

It's probably 0.5 mm.

> 
> Do you think this is possible with TT?
> 
> It are xilinx cplds..
> 
> I have some with 160pins (xc95216) but they have a wider spacing, they 
> don't trouble
> me much but the 20 mil is really a bit low.....
> 
> i would really dislike to buy some photoresist boards and my printer 
> doesn't make transparencys
> that are good...

I don't think TT will be much use.

Leon