Steve,
I would stick to the V-score adding mouse bites our routing tabs will make it a bear to depanel. This is assuming your operators are not like the gorilla they used in the Samsonite commercial back in the 70's.
The material outside the board shape is enough to support the board through your process. If anything, I would bring the per-route just above the V-score line to create a larger web.
I agree with Scott about nesting them to save on material, metal core boards are not cheap.
Ted
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Decker, Scott UTAS
Sent: Friday, February 24, 2017 11:07 AM
To: [log in to unmask]
Subject: Re: [External] [TN] Panelizing Aluminum PCB's...
Steve,
Wow, that's an interesting shaped board, made me want to go to the ice cream store for some reason... :-) BTW, just wondering why you didn't flip 2 of them to nest them closer, maybe save a few bucks on materials? Anyway, in my opinion, I think you could do either and they should be ok. That said, by adding a tab between the boards would secure them from any twisting, but make them a bit less fun to de-panelize. You didn't mention the thickness of the boards either. If they are thin like .031 or so, the v-score might be too flimsy and you would want to use the mouse bite idea. Just my $.02 worth, your mileage may vary...
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, February 24, 2017 9:46 AM
To: [log in to unmask]
Subject: [External] [TN] Panelizing Aluminum PCB's...
Good Morning all,
We're about to build a MCPCB (Metal Core) and I'm having a little issue about panelizing it. It's a little teardrop shaped board about 1.5" wide by 3.5" long. So I did a panel drawing for the board shop to panelize this for
me:
https://urldefense.proofpoint.com/v2/url?u=http-3A__stevezeva.homestead.com_Aluminum-5FCore-5FPCB.jpg&d=DQIBaQ&c=ilBQI1lupc9Y65XwNblLtw&r=Z5GKU9L_wgbp5uvPzUdN9HWtU4lRZiIaLoTaEwcy40w&m=Wfb6mijl3O8EUhyeID2JvbmWxP7tPeWdFkoqmKAuLO8&s=m6O2c0VruRSwHEwlH465CSnLDhljOb9Mrtko3ioSd8g&e=
I have one board shop telling me that the v-score is the best way to go as far as being able to depanelize it after building it, and I have another board shop telling me that a tab routed mousebite is the way to go because a v-score will make the panel too flimsy. So what is your take on it? The board has doubl sided SMT
I've built metal core boards before at a past employer but they weren't panelized, so I'm not quite sure how stable it might be with a v-score, or how difficult it would be to singulate with a mousebite. Also we do almost all of our depaneling here manually, we don't have anything but a foot operated pneumatic tab nibbler.
Any input is appreciated,
Steve
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