[sdiy] PCB assembly house board failure rates?

[Matthias Herrmann]

i think this is exactly what i experienced, too - much smaller scale, though.

no assembly problems with SMT, but some with TH (which is done by hand due to the small runs i do). 
any problem i once had with SMT was due to weak my design, hehe.

cheers,
matthias


> -----Ursprüngliche Nachricht-----
> Von: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] Im
> Auftrag von Phil Macphail
> Gesendet: Donnerstag, 17. Januar 2013 18:54
> An: SDIY List
> Betreff: Re: [sdiy] PCB assembly house board failure rates?
> 
> My experience of high-volume assembly (>5M boards/year) was that a failure rate above 1% was a
> major issue. That was with automated placement and reflow soldering, so failures were mostly
> due to circuit design not being tolerant of device variation - yield was considered to be a
> direct indicator of design quality.
> Manufacturers have the advantage of consistency and throughput, both of which increase yield
> so you can't really compare with hand assembly, but it is fair to say that a good design made
> with quality parts shouldn't need any debugging to work as intended. Failures should be
> dominated by such things as solder-bridges and wrong part placement, when they are done by
> hand.

<snip>

> 
> Phil