Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


MyData DPak not placing

Views: 1244

#70058

MyData DPak not placing | 26 July, 2013

Hi all, I'm having issues placing 7 pin DPak packages. I'm using mechanical centering with four centering phases (one for each orientation). Tool used is A24S. Machine picks up the part but will reject it when centering the part. I have measured all the dimensions and the are all entered correctly. Please advise. Thanks!

reply »

#70060

MyData DPak not placing | 26 July, 2013

Check the centering force, and change it to High, if it isn't already.

reply »

#70091

MyData DPak not placing | 29 July, 2013

First figure out which centering phase it is using when the part gets rejected. Then run the machine in step mode and watch whats going on.

reply »

#70094

MyData DPak not placing | 29 July, 2013

Is it failing the optical measurement or a vac measurement? I know that sometimes there is a dimple on the face which can cause rejects due to low vac. I am not sure about the MyData though.

reply »

#70098

MyData DPak not placing | 29 July, 2013

Usually the reason it will fail a part like that when you are using mechanical centering is because the part is usually picked so off center because of the body shape. So when the centering jaws close to push the part to center they give up and fail the part because the force required to push the part was too great.

So if you set all of the centering phases to use high force I would think it would work just fine. (In my experience, optical centering of a TO device just doesn't work that great on the MyData machines.)

-Phil

reply »

#70099

MyData DPak not placing | 29 July, 2013

We have placed millions of DPAKS on our Mydatas without issues. Usually the crosshairs need to be just slightly to the right of the dimple when trimming.

We do not use high centering force.

Please tell us exactly what the error message is.

reply »

#70113

MyData DPak not placing | 30 July, 2013

Seems to pick up and place fine now. No idea why, didn't change a thing. Thanks for the advice everyone!

reply »

SMT Custom Nozzles

SMT equipment