Thanks, Bob! Good info.



-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of rkondner

Sent: Wednesday, December 20, 2017 5:08 PM

To: [log in to unmask]

Subject: Re: [TN] SW for Proto Builds



Hi,



   There is a $69 tool I wrote. Go up to www.partsync.com and download BOM Builder. It has a 30 day free trial. The checking is more visual but automatic checks can be done. The main issue is having "Package Models" 

and PCB locations / rotations.



The "Package Data" is in a state of change right now, I am adding data to support 3D part generation.



One item I have done in the past is what I call "Pin In Paste". I took the metal definitions for packages and verified that the metal areas overlay the solder paste openings by at least 95%. Yep, some board fail.



   Look at www.kondner.com/files/BB10B_SMT.pdf  for a sample with RED pins in light blue paste.



   Don't forget to read the manual! :-)



   You mention a number of hard to believe items. Yep, absolutely true. 

I personally processed a lot of job when starting up a proto assembly company, they are all true.



Bob K.





On 12/20/2017 5:10 PM, Bob Wettermann wrote:

> Heh All:

>

> One of our customers recently had a small quantity build where he was 

> told by the proto CM that the following was done via SW prior to a 

> build happening…..

>

> Part rotation check (Find this hard to believe as diodes and LEDs are 

> pretty much a source of numerous errors)

>

> Package to footprint fit check (I find this one really hard to believe 

> as there are some variations on this theme)

>

> Part spacing is accurate and within minimum electrical clearance (I 

> find this hard to believe as most people involved in procuring final 

> assemblies do not know what the operating voltages on the board)

>

> Polarity markings that are missing (Same disbelief as above for part

> rotation)

>

> The BOM number of placements matches XY data (I can believe this for 

> the total number of placements)

>

> Ours checks for proto assembly include BOM-to-CAD compares, i.e., are 

> all of the parts on the BOM included in the CAD file, no dupes  and 

> vice-versa (that is CAD to BOM.)

>

> Is there a commercial tool that can do the items listed above that 

> help assemblers that I am just not aware of?

>

> Regards and HNY