Electronics Forum | Fri Aug 16 13:49:48 EDT 2019 | slthomas
Thanks Ed. I guess about all we can do is hope that the extreme nature of the flaw equals a higher degree of early detection. So far we haven't replaced any of these on RMA's so I guess that's a good sign.
Electronics Forum | Mon Aug 19 07:42:59 EDT 2019 | robl
At least one of them looks like a handling issue to me - the last picture shows the crack going into the termination as a scratch on the right side - as if someone has slid another board into a magazine without leaving enough space. This one looks li
Electronics Forum | Mon Aug 19 09:42:41 EDT 2019 | edhare
Dave, Perhaps, but my interpretation of that photo is that it simply shows a knit line fracture that propagated out to the surface. The fact that it shows on the termination is not surprising since the termination wraps around the internal plate st
Electronics Forum | Thu Aug 22 23:30:12 EDT 2019 | jandon
Check from the component distributor/manufacturer if they can verify that the component is genuine or counterfeit component. I know a similar case and the manufacturer could not verify the component as a genuine. They could not find the batch number
Electronics Forum | Sat Oct 05 16:29:28 EDT 2019 | davef
CRACKS: THE HIDDEN DEFECT by John Maxwell AVX Corporation - SMTnet Technical Library paper [ https://smtnet.com/library/files/upload/cracks.pdf ]
Electronics Forum | Wed Nov 13 15:00:57 EST 2019 | stephendo
I have seen resistors cracked during placement. The part was programmed incorrectly and the nozzle pushed down on the part too hard. I do not remember seeing any cracked during depanelization. Nibblers can cause damage if they are on the bottom and
Electronics Forum | Thu Nov 14 21:53:04 EST 2019 | sssamw
I've seen crack on resistor also.The crack on ICs mainly is on the solder joint due to very high strain.
Electronics Forum | Mon Nov 18 09:04:20 EST 2019 | davef
Review: * Too much placement force * Underside supports are set incorrectly * Component height set incorrectly * Downstroke location of either the pick or placement set incorrectly * Nozzle that is smaller than recommended for the part * Part
Electronics Forum | Mon Nov 18 20:30:39 EST 2019 | alanyang
The chip resistors are placed on the edge of the board, but the board has no or enough waste tabs. When de-panelizing, the bits may contact and break them. You can use a smt carrier, or add waste tabs in your next assembly manufacturing.
Electronics Forum | Tue Nov 19 03:12:58 EST 2019 | luciano_zhang
Hi Trino, I know some china's SMT company who may help you solve the problem you can visit their offical web and see if they can help you solve your problems. http://www.starivergroup.com
