Re: 1mm BGA virgin

On Oct 20, 2:10 am, "colin_toog...@xxxxxxxxx"
<colin_toog...@xxxxxxxxx> wrote:
Simon

Take a look at PCB train in the UK, a simillar service to PCB Pool
which you mentioned. I used them to make a 1mm BGA (SPARTAN 3E) pcb
which I then soldered using a toaster oven.
I was even able to put the power pour on the top layer by carefull use
of FPGA pins to get the power out.

I'm not at the right computer, so I don't have the dimensions to hand.

Colin


Thanks Colin :)

I have managed to get the thing to route, with a partial (coudn't
quite manage the entire plane) ground plane and a complete power plane
- and it conforms to the dru-settings for SunStone (http://tinyurl.com/
5u5g5o), although it took 5 hours to route, and that's on a top-end
Mac Pro - I wish Eagle had a multithreaded autorouter.... I'll
probably be ordering it this afternoon. Since I'm in the US, shipping
costs would probably be quite high from the UK, not to mention that
the exchange-rate isn't exactly favourable right now :)

Good to know you got the toaster-oven thing to work. I'm going to ease
into it, some TSOP RAM chips, a QFP (video decoder), and then the BGA
(image compression)... Rather looking forward to breaking the new
ground with the whole SMT thing :)

Cheers,
Simon
.

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