Electronics > PCB/EDA/CAD

JLCPCB good for more than 2L PCB - can they follow instructions ?

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mon2:
Hi. Quite frustrated with a recent job submission with JLCPCB for a rather simple 4L PCB. Anyone have senior engineering contacts at their factory that may know what they are doing on PCB processing ?

They have removed the solder mask off our submitted fileset and simply do not understand the fault. The order is still being processed but not sure if we will go back for this torture in the future. As we are paying by the minute to review their errors and had to chat in the middle of the night 4+ times, causing loss of my beauty rest.

Their comment is that we should not have approved the file - well heaven forbid, yes our staff took the weekend off. Did not think to have to babysit and check for their factory generated errors.

I suppose we can fix what they have broken.

It may be wiser to stick with our mainstream Suntak / China Fast Print / Yaxinda PCB shops. They simply get it done right, the first time.

JPortici:
I've never used JLC for production, but none of the 4L boards i've sent have had issues in fabrication. Sure it's frustrating when you're stuck talking to a middleman who can't understand you or relay your message properly

rpiloverbd:
Sorry, I have no contacts at JLCPCB factory. Many senior engineers hang around here.   I hope somebody will surely of good help to you.  I think, for multilayer PCBs, Rayming PCB is a good alternative. They do rigid PCBs up to 20 layers. And flex PCBS up to 8 layers. Their communication with the customer is also satisfactory as far as I know.

https://www.raypcb.com/rigid-flex-pcb/

mon2:
Thanks guys. I recall Rayming from past chats (perhaps even met them at HK trade fairs) but have not used them yet. JLCPCB factory also pinged back and now their machine is in motion, errors and all that were generated by their side.

Originally thought no big deal - we can manually fix any solder bridges and perhaps their equipment cannot handle fine pitch parts with solder mask. However, our USB Type C connector has the spec'd in solder mask yet a larger, more coarse pitch 28 pin device is now missing the solder mask. Of most concern are the tiny TDFN (diamond shaped) LDO regulators we like to use as they are of the few available under the semiconductor crunch.

Just sucks to have to repeat the same statements over and over in the middle of the night. Factory is saying to accept the boards as-is and report back any faults and they will make it right.

Made it clear that if there is a next time, do not want amateur hour reviews of the submitted jobs. If we have to continue to pay on the backend to correct their faults, where is our savings in this business deal ?

I guess we are getting what we paid for.

thm_w:
So they only removed the mask in some areas. What was your DRC rule set to in terms of minimum sliver?

https://www.eevblog.com/forum/manufacture/minimum-gap-for-solder-mask-between-pads-at-jlcpcb/

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