On 5/29/06, Robert Spanton <[EMAIL PROTECTED]> wrote:
I make PCBs at home with a minimum track width of about 0.12mm. I'd
like to use BGA components in my designs, but possibly the biggest
problem lies in actually getting the tracks out from under the BGA.
Looking at other designs, it looks like it's possible to get all the
tracks out from under the BGA on a 2-sided board but only if you can
get vias between the pins of the BGAs. Drilling those vias accurately
is more difficult - hence my need for an x-y table...
Then once you've got those vias, you've got to get some sort of
conducting stuff through them. I don't think sodlering anything
through them is an option, as they wouldn't be flat enough to go
beneath the BGA. The only chemicals I've seen for plating PCBs seem
quite expensive (for a student!). I'd be interested to know if there's
anyone who can suggest cheap ways of copper plating the holes.
So, most board houses are optimized for mass production. I wonder
what it would take to optimize for one-offs. And how much would the
boards have to cost?
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