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

[Chris McDowell]

Yeah I use this service just about weekly. I have noticed what you're talking about, and it -is- kind of hair raising. early on, they would occasionally put diodes backwards, so having that visual log of their correction was awesome. today, the parts placement is mirrored wrt the pcb image underneath, so it's even tricky to confirm no missed parts. I hope they get it sorted but as you stated, even with these issues their quality is awesome and I don't receive anything with mistakes other than my own hehe

Chris 

Sent from my iPhone

> On Oct 27, 2021, at 4:48 AM, Mike Bryant via Synth-diy <synth-diy at synth-diy.org> 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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