pcb pooling for BGAs

  • Thread starter colin_toogood@yahoo.com
  • Start date
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colin_toogood@yahoo.com

Guest
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
 
On 30 Nov, 08:49, "colin_toog...@yahoo.com" <colin_toog...@yahoo.com>
wrote:
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.
Click to expand...
How many layers are you using? You will need at least 6 layers for
most BGAs to route them successfully.
 
colin_toogood@yahoo.com <colin_toogood@yahoo.com> wrote:
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.
Click to expand...
Did you look at www.multipcb.com?
--
Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
 
On 4 Dec, 23:28, Uwe Bonnes <b...@hertz.ikp.physik.tu-darmstadt.de>
wrote:
colin_toog...@yahoo.com <colin_toog...@yahoo.com> wrote:
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.

Did you look atwww.multipcb.com?
--
Uwe Bonnes b...@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
Click to expand...
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
 
On Wed, 5 Dec 2007 01:17:38 -0800 (PST), "colin_toogood@yahoo.com" <colin_toogood@yahoo.com> wrote:

On 4 Dec, 23:28, Uwe Bonnes <b...@hertz.ikp.physik.tu-darmstadt.de
wrote:
colin_toog...@yahoo.com <colin_toog...@yahoo.com> wrote:
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.

Did you look atwww.multipcb.com?
--
Uwe Bonnes b...@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
Click to expand...
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....
 
On Dec 1, 4:36 pm, Leon <leon...@btinternet.com> wrote:
On 30 Nov, 08:49, "colin_toog...@yahoo.com" <colin_toog...@yahoo.com
wrote:

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.

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