pcb pooling for BGAs

Nov 30, 2007 5 Replies

Guys



In the uk we have easy access to PCB-pool and PCB train. These companies provide prototypes where the tooling is shared amongst multiple designs.



However, neither service provides the design rules to fan out a 1mm pitch pcb. Does anyone know of a company providing this service for such pcb rules? The problem is that the anti-pad is too big and you can't route between them when they are 1mm apart.



Any pointers appreciated.



Regards



Colin


How many layers are you using? You will need at least 6 layers for most BGAs to route them successfully.

Six it is. You can route out on top, bottom and two inner layers, leaving 2 for ground and a split power.

So, to ask my question more accurately. What's the cheapest manufacturer in europe or the states to build a single 3 inch square pcb with design rules to allow a grid of vias on 1mm pitch with six layers?

Colin

Did you look at

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Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

I've just taken a look. They would be perfect if I could buy one pcb from them, but they insist on two. If I could buy one then it would be a simillar price to pcbtrain but with the design rules I need.

Anyone else out there?

Colin

At very low volumes, it is not uncommon for the 1x price to be little more than double the 2x price, and a spare proto board is often handy to have....

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