Electronics Forum | Thu Mar 20 14:05:17 EST 2003 | MA/NY DDave
Hi Rene Great, I am glad to see that you are recommending by experience placement control as affected by the pick operation. Neat to see you are also noting a thinner paste deposition. YiEng, MA/NY DDave
Electronics Forum | Mon Aug 25 20:35:51 EDT 2003 | davef
We don't see very much MCC shorting, except after over-voltage. We see much more in the opens category. Were these puppies shorted out of the box?
Electronics Forum | Mon Oct 27 09:54:40 EST 2003 | John
We're just now beginning to see 0402's in our designs. Can anyone make recommendations on stencil/aperture designs and print parameters? I'm seeing skips on a small number of joints on these parts. Thanks in advance, John
Electronics Forum | Thu Aug 26 22:44:40 EDT 2004 | Indy
We do perform multiple reflow only for reliability testing. 90% of the time we have not seen any change in the solder joint and no change in electricals. If you do see failure you might want to see the solderability of the surface finish too.. jus
Electronics Forum | Thu Sep 29 12:06:47 EDT 2005 | Dolby Laboratories
Try seeing if this has any answers - its just been published See http://www.smartgroup.org/experience/experience%20report%202005.pdf
Electronics Forum | Fri Sep 03 16:47:40 EDT 2004 | davef
Rob's comments make sense. Responding to your question: * Sometimes you can see a resistance change * Sometimes you can see a leakage change
Electronics Forum | Mon Mar 07 20:33:35 EST 2005 | KEN
Rule 1: Clean it as soon as you see it! Don't let it dry. It's harder to clean up and can be easily injested when in a dry powder form. Rule 2: See rule 1
Electronics Forum | Thu May 05 16:02:43 EDT 2005 | russ
I don't believe that you are seeing black pad. I think you are seeing an oxidized pad from your statement that these pads take solder. I would guess that these will be fine. But I would re-tin all pads prior to attaching the BGA to make sure.
Electronics Forum | Thu Aug 03 16:42:48 EDT 2006 | Merle
The cleaner does have a dryer, but does not remove all moisture - we can see that. It is functioning - we can see that too.
Electronics Forum | Wed Aug 09 09:56:49 EDT 2006 | russ
Can you see the little dots on top of part? there should be three colored dots. If you can see then that tells you the value. Russ
