Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

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.

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...



ST


(p.s. i managed to get my nylon screws yesterday... had to make them from
a old plastic clothes hanger. no way to buy plastic screws with hexagonal
head..... will report soon about the horizontal
pcb etch holder)