[PCB_FORUM] Re: AMC 's breakoff tabs or vcuts?

Samuel,

 

The designs I typically work on are not for production, so I'm not sure
about the added cost.  But whenever I design a panel, I usually go with
scoring (I guess that's what you mean with "vcut").

With scoring, after you break them apart, it leaves the edge a little
rough.  For a perfectly smooth board edge, nothing beats routing.  Like
George said, it will cost extra.

 

Good luck,

 

Gary E. MacIndoe

PCB Design Engineer

Advanced Micro Devices

Longmont, Colorado

________________________________

From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of
george.h.patrick@xxxxxxxxxxxxxx
Sent: Friday, November 03, 2006 9:46 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: AMC 's breakoff tabs or vcuts?

 

 

We typically route the tabs away after assembly, especially on plug-in
boards.  More expensive, though, since it takes longer and requires a
router and a supply of bits  to do it.

 

-- 
George Patrick
Tektronix, Inc.
Central Engineering, EDS Applications Support
P.O. Box 500, M/S 39-512
Beaverton, OR 97077-0001
* 503-627-5272 (voice)     * 503-627-5587 (fax)
http://www.tektronix.com <http://www.tektronix.com/>
http://www.pcb-designer.com <http://www.pcb-designer.com/> 
 
"Off-Grid and Proud of it!"

        -----Original Message-----
        From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Samuel Cais
        Sent: Thursday, November 02, 2006 15:34
        To: icu-pcb-forum@xxxxxxxxxxxxx
        Subject: [PCB_FORUM] AMC 's breakoff tabs or vcuts?

        Hi all,

         

        On our AMC's we are having a concern with our breakoff tabs and
the rails to plug the board.

        Here is the kind of breakoff we are using with 40mils and 20
mils diameter drills:

        Have you got any suggestion of vcut or breakoff to make the edge
of the board better?

        Thanks

         

         

         

         

         

         

         

         

        Samuel CAIS                                Interphase
Corporation

        CAD PCB Designer                           2901 N. Dallas
Parkway #200

        cais@xxxxxxxxxx                            Plano, TX 75093

        214.654.5337                               www.Interphase.com

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