> As a side, has anyone done any homebrew pcb/ bga placement? TT or
> not.
A few months back I did an experiment with a 555 time in a micro 8
package. My first project to experiment with some 0201 components as
well. The 0201's mounted just fine. Some of the solder balls on the
bga wicked out along the traces and the bga did not settle properly.
There was some bridging as well.
For alignment I bought some balsa triangle and small 1/2 inch mirrors
so I could check the alignment of the balls to the pads. The work was
done under a stereo zoom microscope.
I ultimately got the circuit to flash, but I lined up the bga part and
crudely pressed it into place to get it stick and make contact. Not a
reliable connection by any means.
Biggest headache was my board thickness. The overall ciruit was not
much thicker than the board.
I have bought some .01 and 1/32 board and at some point when I do not
have other projects pressing, I will give it another go.