[SI-LIST] Re: PCB Fab Costs]
- From: Wayne Posey <wayne@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 13 Feb 2007 08:05:46 -0600
Try this link:
http://www.merix.com/files/DFM%20Manual%20rev%20b.pdf
Wayne Posey
msharpes@xxxxxxxxxx wrote:
> <http://www.merix.com/files/DFM Manual rev b.pdf>
>
> -----Original Message-----
> From: msharpes=20
> Sent: Monday, February 12, 2007 2:50 PM
> To: 'christopher.mcgrath@xxxxxxxxxxx'; si-list
> Subject: RE: [SI-LIST] PCB Fab Costs
>
> Chris - A good question. Being on the design end this is always
> something to be conscience of when sending a design off for fab. For an
> answer to this I had referred to DfM guides made by fab vendors. One in
> particular, Merix, used to publish a DfM guide on its website
> (www.merix.com), but I see that the guide is no longer available, or
> perhaps through NDA only? The guide was structured in a way that gave a
> complexity factor (they actually called it that) to different ranges of
> capability for a certain attribute. For instance, trace to trace
> spacing, soldermask minimum feature size or aspect ratio. So, by
> looking at the spec and comparing it with your design you could at least
> see where your design pushed the limits which may increase cost. I
> don't know of a good, current printed resource for this that is done in
> this way, but in the absence of that you may want to hit the search
> engines to look for DfM guides from some fab shops that do publish
> those.
>
> If nothing else, you could ask the shops you work with to provide an
> IPC-1710 form (basically, a listing of capabilities) to establish a
> baseline of capability so you know where their limits are. From this
> you would know that as you approach those limits or exceed them, cost
> and/or producability would be affected.
>
> Some of the items you bring up are simply cost drivers, not necessarily
> complexity factors, but I suppose some are both (e.g. drill count, layer
> count, panelization I would see more as cost drivers than complexity
> factors.)
>
> BTW, if anyone has a current link to that Merix DfM I'd be grateful for
> a tip on that. ..mike
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of Christopher McGrath
> Sent: Monday, February 12, 2007 10:35 AM
> To: si-list
> Subject: [SI-LIST] PCB Fab Costs
>
> We are in the process of developing some cost analysis tools for our PCB
> costs and I was wondering if anybody out there had run across some
> resources out there that were worth looking at. =20
> =20
>
> For instance, I am interested in any common methods for calculating some
> kind of "complexity factor" based on common inputs such as layer count,
> lamination cycles, panelization, board area, drill count, drill size,
> etc. for cost and schedule planning and for comparing designs of varying
> complexity.
>
> =20
>
> Thanks,
>
> Chris
>
> =20
>
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> //www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
> List technical documents are available at:
> http://www.si-list.net
>
> List archives are viewable at: =20
> //www.freelists.org/archives/si-list
> or at our remote archives:
> http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
> =20
>
> ------------------------------------------------------------------
> To unsubscribe from si-list:
> si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
> or to administer your membership from a web page, go to:
> //www.freelists.org/webpage/si-list
>
> For help:
> si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
> List technical documents are available at:
> http://www.si-list.net
>
> List archives are viewable at:
> //www.freelists.org/archives/si-list
> or at our remote archives:
> http://groups.yahoo.com/group/si-list/messages
> Old (prior to June 6, 2001) list archives are viewable at:
> http://www.qsl.net/wb6tpu
>
>
>
-- Binary/unsupported file stripped by Ecartis --
-- Type: text/x-vcard
-- File: wayne.vcf
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
