Archive of the former Yahoo!Groups mailing list: 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