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Need help getting our mydata TP9 to place 8-dfn package parts.

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#78808

Need help getting our mydata TP9 to place 8-dfn package parts. | 1 September, 2017

I've been struggling trying to get our TP9 machine to place 8-dfn package parts. One of our primary assembly contracts uses a SOIC8 but the pad design accommodates an alternate 8-DFN part and sometimes we have to go to our alternate part due to lead times on supply. I have been hand placing them thus far but with standard PCB design and more parts being offered in the 8DFN packages I have a few more boards starting to use that package instead and continuing to hand place does not fit our assembly, inspection, and rework time frames. Could it be that I'm simply missing a key setting or special trick, or is this simply a problem part for the MyData TP series machines and tools to place? Any help or suggestions would be GREATLY appreciated. D. Gaddis @ Prime-Power

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#78823

Need help getting our mydata TP9 to place 8-dfn package parts. | 5 September, 2017

Or if anyone has found specific tricks with QFN packages that may have a similar answer for DFN parts.

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#78827

Need help getting our mydata TP9 to place 8-dfn package parts. | 5 September, 2017

I am not sure why you would have an issue placing a DFN with your TP-9.

Is the machine throwing it away or mis-placing ?

Throwing the part away could have several reasons and so could mis-placement.

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#78829

Need help getting our mydata TP9 to place 8-dfn package parts. | 5 September, 2017

There is no reason why your machine shouldn't be able to place that part. What error or errors are you getting when the machine tries to place that 8-dfn package?

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#78830

Need help getting our mydata TP9 to place 8-dfn package parts. | 5 September, 2017

Create a package, set the mechanical centering to the dimensions of the 8-DFN that you're trying to place, test the centering. Tweak the dimension that's failing.

Shouldn't be too much of a problem. An 8-DFN package is nothing more than a rectangular package.

What issues are you having now? What is the failure mode? And what, if any, messages are you getting on the machine.

Cheers, ..rob

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#78833

Need help getting our mydata TP9 to place 8-dfn package parts. | 5 September, 2017

Thanks for the replies. I ended up finding the issue this morning while digging through the operators manaual trying to back track any issues in the package. We ended up finding that somewhere along the way either, however unlikely, the body size had be saved in the lead groups and centering phase settings at 10 times the value all the way out to 35.4 mm... So either there was a error when the files were saved/backed up at some point or human error from the previous operator.

Now to just go through some of the other packages and check through all the settings and make sure there wasn't similar issues.

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