[sdiy] Does anyone here use JLCPCB for SMD assembly ?

[doug at synthark.com]

I've only seen issues with their part placement visualization (based on 
PNP file) stacking all of the parts in the center (not even trying for a 
good placement) or not getting close to the correct location.  
Similarly, support said don't worry about it, an engineer figures it all 
out before the assembly run.  I haven't had a bad board from them yet.

---
Doug Huseby
http://synthark.com
http://synthark.org


On 2021-10-27 03:43, Mike Bryant via Synth-diy wrote:
> When SMD assembly was a new service at JLCPCB there were obviously
> teething problems.  For example parts shown as rotated online and so
> on but the PCBs always came back fine as they spent time fixing
> everything.
> 
> But it seems like their DFM analysis is getting worse, not better.
> DFM for my latest PCB had pages of errors, many marked 'unknown'.
> Every electrolytic throws a problem, and one particular value of 0805
> resistor, using the same pad as every other 0805 resistor value,
> throws up lots of times as 'Soldering area is too small'.
> 
> Talked to their support people this morning and they said they just
> ignore the DFM analysis and load the components anyway, but this tells
> me nothing on how to make the PCB more production friendly and hence
> reliable in mass production.
> 
> Anyone else seeing this ?  Their PCBs are far better than anything one
> can get in Europe at a reasonable price, and the SMD loading does seem
> well under control with no failed joints so never need rework, but
> they do seem to add to the stress of wondering what's going to come
> back each time.
> 
> Thanks
> 
> Mike
> 
> 
> 
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