[SI-LIST] R: Re: AW: Re: 10 mm PCB
- From: "gianguida@xxxxxxxx" <gianguida@xxxxxxxx>
- To: <Wolfgang.Maichen@xxxxxxxxxxxx>, <Gert.Havermann@xxxxxxxxxxx>
- Date: Wed, 23 Nov 2011 14:34:19 +0100 (CET)
Hi folks,
first of all let me thank all of you whio replied to my post .
All suggestions have been really useful.
Actually this application is a printed antenna and for several reasons it is
necessary to have such large thickness
there are just 4 dielectric layers biut it is needed to have such large
thickness.
Again thanks to everyone
Giancarlo
----Messaggio originale----
Da: Wolfgang.Maichen@xxxxxxxxxxxx
Data: 23-nov-2011 9.22
A: <Gert.Havermann@xxxxxxxxxxx>, <gianguida@xxxxxxxx>
Cc: <si-list@xxxxxxxxxxxxx>
Ogg: [SI-LIST] Re: AW: Re: 10 mm PCB
Hello Giancarlo,
I guess the first question one should ask is: What is the reason for the
thickness requirement? Do you need such a large number of layers (or very thick
dielectrics between copper layers), or is it a purely mechanical reason, e.g.
to get sufficient stiffness? If the latter, something like an aluminum
stiffener conbined with a thinner board would probably be a better solution.
Even if it is the number of layers, there could be ways to reduce total
thickness - I have seen tester load boards that had to route several power
planes as well as a couple of thousand signal lines across the board yet none
of them ever exceeded about 5mm / 0.2 inches.
The more we know about the application the easier it is for other people to
come up with good and/or innovative suggestions you may not have thought of.
Regards,
Wolfgang
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Havermann, Gert
Sent: Tuesday, November 22, 2011 4:56 PM
To: gianguida@xxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] AW: Re: 10 mm PCB
David,
Photochemie's limit is 6.5mm.
For 10mm I only know one supplier in China, and I can't recommend them for
SI-PCBs. But I also can't recommend 10mm thick PCBs for SI-applications.
Giancarlo,
Have you thought about Multi pressing with two separate plating processes?
Similar to HDI technologie, that's two ready 5mm PCBs that are bonded together
with a prepreg, then the thru drill and plating of the thru vias only, and
etching of the outer layer.
Might be the best option for Processing and SI.
BR
Gert
Besuchen Sie uns auf der SPS/IPC/Drives vom 22. bis zum 24. November 2011 in
Nürnberg, Halle 10, Stand 140.
http://www.mesago.de/de/SPS/home.htm
-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von Dudi Tash
Gesendet: Dienstag, 22. November 2011 16:44
An: gianguida@xxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Re: 10 mm PCB
Hi Giancarlo,
Photochemie in Germany are great.
David
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of suresh kondepati
Sent: Tuesday, November 22, 2011 5:26 PM
To: gianguida@xxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: 10 mm PCB
Hi Giancarlo,
How about Indian producers. Let me know your PCB details if you are OK with it
thanks
suresh
On Tue, Nov 22, 2011 at 7:06 PM, gianguida@xxxxxxxx <gianguida@xxxxxxxx>wrote:
> Hi folks,
> I am looking for companies that can manufacture pcb with an overall
> thickness of 10 mm.
>
> Due to my location (Rome) I would like to get in contact with Italian
> industries, European producer could also be ok...
>
>
> Thanks a lot for your help
>
> Giancarlo
>
>
>
>
>
>
>
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