Re: BGA on 4-layers?


H wrote:
> Hi Linnix,
>
> > Your at91rm9200 sbc seems interesting. However, the 16M memory is too
> > small. Can you help us upgrading it to a 256M module? We can provide
> > you with the prototyype boards and parts and cash. We want to hook it
> > up to the module at http://pcb.linnix.com/mem.jpg Thanks
>
> Does your company produce PCBs for prototyping? Would you offer you
> services to the general public?

Yes, we do prototypes, productions and assemblies. Right now, we have
clients who need low end SBCs (Arm, PPC or X86) with lots of memory
(256M+). We are trying to link them up with designers and
manufacturers. we are still working out the system, but we can provide
Java based PCB (gerber) previews to the manufacturers. It's good
enough to ask for quotes without sending them the actual files. We
only send the customer's gerber files to the selected manufacturer.

Right now, we have to send out the Java Applet (but not the data, which
reside on our server), since it does not seem to work consistently with
all browers. If you send me the gerber files, I will send you the
applet to preview it. You can see if you feel comfortable with your
design being send out that way, or with more protections.

http://pcb.info-for.us

>
> You mentioned that most/all Taiwanese companies go through China.
>
> What are the environmental laws in China with respect to things like PCB
> production? I know that in the US the chemicals may not (legally) be
> disposed of in a harmful manner.

It's no worse than the Food and Textile industries, or many other
industries there. Unless we stop buying foods and clothes anywhere
(not just in China), we cannot stop the polutions. Of course, we can
help by driving older and smaller cars (mine is a 1994 Toyota), since
building a new car also cause lots of pollutions.

>
> Regards.
> H.

.

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