PCB Assembly Services - Screaming Circuits: Can you Combine Panelization Techniques?


Can you Combine Panelization Techniques?

Yes. As a matter of fact, you can. This example - our "You Do You" motion activated lapel pin for the 2020 Open Source Hardware summit in New York City, March 13 says that you can.

You can find all of the background on the board in this prior blog post here.

But first, take a look at the board hot of the presses from our partner, Sunstone Circuits. It's a pretty small thing: 1.3" x 1.6" x 0.042" thick. We're building a run of 400 and we don't have a lot of time. How convenient that we build electronics things for a living.

We need it panelized for faster processing, which Sunstone did for us. V-score will allow for faster depanelization, but I wanted rounded corners for the design and a cut out for the tiny on off switch. V-score can only do straight lines.

YDY unpopulated single in panel

We had the board v-scored along the straight edges and routed for the non straight edges. It's not a normal thing, so it may take an extra note in the "Project Notes" field of our order form, or a call or email to customer service, but it is very doable.

A couple of other important things to note here:

See the fiducial on the panel upper left corner? And see the two fiducials on the individual PCB? Both good ideas. There is a second fiducial on the panel that you can't see. The two fiducials (also called "fids" in the bidness) on each board are in an asymmetrical pattern (also called (asympat in the bidness - not really). The asymmetrical pattern allows our machines to automatically ensure that the board is oriented the correct way.

Also, the smaller QFN on the left side, for the accelerometer, has a via in the center area. That part does not have a metal pad in the center as many QFNs do. If the part did have a metal pad, I would not have an open via in there.

Duane Benson
I think the "YDY could also mean..." joke has run its course



Nice information given to this topic.

Nice Post

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