Electronics Forum | Tue Jul 18 03:04:46 EDT 2006 | sharifudin
We are trying to reduce the number of unit fail at QA Visual Inspection due to Solder On Gold Finger. We know so far that the solder is spattering onto the Gold Finger during reflow. I need some advise on what kind of process can improve to reduce th
Electronics Forum | Sun Jul 26 20:54:40 EDT 1998 | Masdi Muhammad
Hi, Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subjecte
Electronics Forum | Mon Jul 27 21:10:10 EDT 1998 | D.Lange
| Hi, | Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subj
Electronics Forum | Tue Aug 18 12:02:59 EDT 1998 | zambri
| Hi, | Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subj
Electronics Forum | Tue Jul 28 02:28:48 EDT 1998 | Bob Willis
The causes for solder on gold are: Paste wash offs Dirty stencils Dirty under stencil cleaning cloths/no solvent Poor handling The most common reason is wash offs when there is a couple of balls left on the tabs and they reflow. With correct profile
Electronics Forum | Wed Sep 18 22:10:48 EDT 2002 | Joe Wong
I'm working China ,in my working factory is a electronic OEM factory and got COB and SMT. But recently, COB got a big problem because the PCB gold finger got a contamination, that make us got a most defect product. So anyone can answer me how to clea
Electronics Forum | Sun Sep 22 13:14:56 EDT 2002 | scottefiske
Stop the lines...! Stop building defects and rework into your product. Contact Fab Supplier and have pipeline filled for small amount of replacement fabs to keep lines running and limiting production scheduling and impact. Request to have the board
Electronics Forum | Thu Sep 19 20:28:59 EDT 2002 | bugsjoe
* What kind of the eraser can clean clearly?I've been use the eraser but the defect still present.
Electronics Forum | Tue Jul 18 22:11:13 EDT 2006 | davef
Aping Russ' reply: * ~70% of the time solder on gold fingers is caused by poor printing and handling processes. * ~25% of the time solder on gold fingers is caused by poor thermal recipe when soldering. * ~5% of the time solder on gold fingers is cau
Electronics Forum | Tue Jul 18 10:08:19 EDT 2006 | pms
kapton tape the gold fingers before reflow.........
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