Jack,
I wonder why you choose 12"x18" since the more popular size is 18"x24". That
shall give you more flexibility. 1" edge doesn't apply to all board houses.
It is best to consult your PCB suppliers.
Best Regards
Jason Zhao
VP of North America Operations
Sunshine Circuits
3400 Silverstone Drive, Suite 139, Plano, TX 75023
US Cell 510-468-4412, China Cell 131-62722392
www.sunshinepcbgroup.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Wednesday, October 31, 2012 10:29 AM
To: [log in to unmask]
Subject: Re: [TN] FAB: panelization sanity check
Jack, there are standard flats sizes ranging all the way up to 22" by 20". I
know there are even larger sizes, but they are not "industry standard"
sizes, so to speak.
A good PWB fab house is very willing to help you with proper layout to
optimize the number of blanks that can be taken from a flat, as well as
depanelization schemes. Keep in mind you don't need to be tied into any one
depanelization method, but a combination can also work well. For example,
routings with a score line passing perpendicular through the end of the
routings.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Wednesday, October 31, 2012 9:27 AM
To: [log in to unmask]
Subject: [TN] FAB: panelization sanity check
Greetings,
This is a very basic question, but I'm trying to design a board size that
will get the most yield out of a standard 12x18 fabrication panel. It's a
6-layer rectangle with nothing fancy (8/8, 12mil holes, ENIG), but we want
routed (not v-scored in this case) and we want 6 boards per panel.
So I have always used the guideline of 1 inch clear all around the panel
edge, (10 x 16 to working space), and 100mil between boards for routing, so
I am looking at something like 4.95" x 5.26", right?
But in this case even 50mils extra would help me, so I'm wondering how much
I can push the envelope and still have it manufacturable by ANY competent
supplier.
Can two of the panel edges be less than 1 inch?
Do I have ANY wiggle room?
Jack (aka "the new guy")
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