How is the panel separated after assembly?

I am designing a PCB for LED tubes. The aluminum PCB is very thin, so I have so many of them on one panel, making it hard to separate them.

Just like the way you handle FR4 PCBs, you can have them milled and V-grooved. But applying V-grooving may not make the edge smooth enough. At this time, you can mill them out entirely and insert them into carriers to assemble.

More reading: What Is the LED Assembly Process?

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