EEVblog Electronics Community Forum
Electronics => Manufacturing & Assembly => Topic started by: loki42 on November 19, 2024, 09:20:36 pm
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I'm not sure if this has been discussed before and I missed it, but jlcpcb has a new QR / data matrix / serial feature that allows you to put a different number on each board, in a scannable form!
This is huge for me, I have been thinking about labels or laser marking boards to do this but them doing it is way easier. Now I can serialise all the boards in the erp, and connect up failures etc to specific production. The printer / spi can scan the board and know which serial numbers are being made. Traceability!
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Man... that makes my purchase of a fiber laser even more frivolous
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*looks sheepishly at my Trumpf fiber laser...*
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These are great. I just tried it on my latest order of 150 boards.
You will get missing numbers. My boards were panelized to 5 boards per panel, and for the batch of 150 boards (30 panels), 30 serial numbers are missing. So, instead of getting 0200-0349, I got 0200-0379 with 30 boards (6 panels) missing.
Not a lot you can do about that I suspect. Would be great if they could test the boards prior to screen-printing, but... whatever. I just need to keep a record of board serials I never received.
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These are great. I just tried it on my latest order of 150 boards.
You will get missing numbers. My boards were panelized to 5 boards per panel, and for the batch of 150 boards (30 panels), 30 serial numbers are missing. So, instead of getting 0200-0349, I got 0200-0379 with 30 boards (6 panels) missing.
Not a lot you can do about that I suspect. Would be great if they could test the boards prior to screen-printing, but... whatever. I just need to keep a record of board serials I never received.
That's actually to be expected. There are boards they will test and scrap. The missing numbers are likely from that. There's not much they can do to prevent this either.
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These are great. I just tried it on my latest order of 150 boards.
You will get missing numbers. My boards were panelized to 5 boards per panel, and for the batch of 150 boards (30 panels), 30 serial numbers are missing. So, instead of getting 0200-0349, I got 0200-0379 with 30 boards (6 panels) missing.
Not a lot you can do about that I suspect. Would be great if they could test the boards prior to screen-printing, but... whatever. I just need to keep a record of board serials I never received.
That gives a bit of an insight into their manufacturing yield. Of course single order is not representative as there could be a number of things which went wrong on that specific batch, but over many order it should paint a picture.
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Got my first few lots of boards with this and it's great. Easy to scan and where I specified it.