Electronics Forum | Thu Aug 01 23:52:12 EDT 2019 | ameenullakhan
Hi ALL, Thanks for your valuable inputs. Will go through the suggestions and come back. Regards, Ameen
Electronics Forum | Fri Aug 02 09:55:41 EDT 2019 | davef
While I agree there is "too much solder" on this board, I don't think that is the sole explanation of what's going on here. I don't think the pads on the board match up well with the terminations on the components.
Electronics Forum | Thu Aug 22 16:13:47 EDT 2019 | scotceltic
I have to agree with Dave here. Can you compare the datasheet pad recommendations to your design ? It may help to show the forum a picture of the bare PCB pad design along with a pic of the bottom terminations on the part. What Stencil thickness a
Electronics Forum | Fri Aug 23 12:51:03 EDT 2019 | ameenullakhan
Hi , We are using 5 mil thickness. Sure will very the PAD with component data sheet recommendation. Regards, Ameen
Electronics Forum | Thu Dec 12 02:46:31 EST 2019 | ameenullakhan
Dear Javi, Thanks for such a detailed study and idea. Will try to prove it to customer. And let you know. Ours is high mix low volume EMS. We may get this PCBA back in next month. Will try to implement all your suggestions. Thanks once again.
Electronics Forum | Wed Aug 07 02:18:49 EDT 2019 | ameenullakhan
Hi Thanks All, In one of our reflow oven , component skew after reflow. So we are suspecting the vibration in the oven. But not able to get the exact source of vibration. So please help us out. Regards, Ameen
Electronics Forum | Wed Aug 07 08:54:55 EDT 2019 | jmedernach
It takes a good deal of sudden movement to skew parts. Who makes the oven?
Electronics Forum | Wed Aug 07 11:21:28 EDT 2019 | charliedci
The melting of the solder during reflow itself can center up or skew a component. This could be pad size differential, incorrect pad size, unequal solder deposition amounts, pad spacing in reference to component size just to name a few.
Electronics Forum | Tue Mar 31 09:25:18 EDT 2020 | emeto
If you believe your picture is in the middle and is not skewed, than go to your basics and recheck your fiducial locations and detection. Sometimes these machines recognize something around and give you this error. Try program with isolated pads and
Electronics Forum | Wed Feb 02 21:32:13 EST 2022 | chuckphd53
The rotation is a fixed parameter..... and of the 9 parts, randomly it will skew the part, could be one or more... I was thinking maybe the solder paste was too dry and during the LIFT after placement it would blow the part sideways.. Yes I am on a
