Indentifying human error as a root cause

outdoorsNW

Quite Involved in Discussions
#31
The OP needs to try to implement AOI for through hole devices. Many AOI machines are optimized for surface mount and don't always see through hole parts well. And even then some parts (some capacitor types for instance) have their markings on the sides in a place that other components can block and therefore the AOI has zero chance of telling a 123 from a 456 because the size is the same, the orientation is the same, and the color is the same.

Yes, ideally the process would be improved. But currently AOI machines are close to doing what the OP needs while through hole machines are expensive, limited in the types of components any one machine can handle, so a company needs several, and not economical for small to medium size production runs.

Better customer design would help, but the reality is most designers know little about PCB assembly and therefore churn out designs with numerous design for manufacturability problems. What worse is many don't want to listen when you try to tell them how to make their board easier to build.
 
Elsmar Forum Sponsor
#32
What worse is many don't want to listen when you try to tell them how to make their board easier to build.
The sales people should learn to decline the work. Not knowing the impact on the cost of goods sold by dealing with customer-induced errors is the slip 'n' slide to going out of business...
 

outdoorsNW

Quite Involved in Discussions
#33
The problem is so prevalent that it would be hard to stay in business if a company rejected everyone with poor designers. The problem is so bad it is almost like dealing with the weather. You just have to build the cost into you pricing to the extent you can.

The big problem is PCB design is rarely taught in colleges. I checked several local engineering programs along with Stanford and MIT and only found one elective class at one local school. Most designers only care about the electrical functionality and not DFM. Many frequently ignore the IPC design guides in the 222x series of IPC documents.
 

Ninja

Looking for Reality
Trusted Information Resource
#34
As someone who runs every aspect of a business on a daily basis...what I read is:
The sales people should learn to decline the work. ...knowing the impact on ... going out of business...
Time to fire those guys.
 
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