Electronics Forum: balls and have and cracks (Page 1 of 14)

solder balls and flux

Electronics Forum | Tue Feb 29 10:14:02 EST 2000 | Robert Hartmann

My company is just getting into the flip chip packaging arena. We are putting in a prototype/small volume wire bond PBGA line. We have some questions with regard to choosing solder balls and cleaning of flux. 1) Is there a formula for the shrink

solder balls and flux

Electronics Forum | Tue Feb 29 10:14:02 EST 2000 | Robert Hartmann

My company is just getting into the flip chip packaging arena. We are putting in a prototype/small volume wire bond PBGA line. We have some questions with regard to choosing solder balls and cleaning of flux. 1) Is there a formula for the shrink

Soldering robot and solder balls

Electronics Forum | Tue Jun 20 15:08:30 EDT 2017 | ranap121212

Hello I have the problem with selective soldering on the robot. Thin balls appear on the laminate. The tin sometimes shoots...? and then the balls are a few millimeters from the soldering point. I tried up or down with temperature, but it did not wor

Palladium finish and solder balls

Electronics Forum | Fri Jun 28 04:10:24 EDT 2002 | robbied

Great, now at least I have an explanation of sorts. Thanks, Dave.

Soldering robot and solder balls

Electronics Forum | Wed Jun 21 11:30:27 EDT 2017 | ranap121212

but we do not have laminate preheating on robots. There is no flux separate application, the flux is in the soldering wire

Soldering robot and solder balls

Electronics Forum | Wed Jun 21 19:01:48 EDT 2017 | mac5

Try baking the boards; you may have a moisture problem.

Palladium finish and solder balls

Electronics Forum | Thu Jun 27 21:28:42 EDT 2002 | davef

You're correct that the Ni/Pd termination seems to have something to do with you solder balling. It could be related to the interaction between your paste and the Pd. I assume these are really 'fines' rather than 'balls'. Things that come to mind a

Re: solder balls and flux

Electronics Forum | Wed Mar 01 10:46:26 EST 2000 | Robert Hartmann

Kelvin, Thanks for the help. The actual opening size is .440 mm, but I think what you said makes sense. After discussing with the customer, it looks like it is the height which matters, more than the diameter. We have learned that the height of t

Re: solder balls and flux

Electronics Forum | Wed Mar 01 10:46:26 EST 2000 | Robert Hartmann

Kelvin, Thanks for the help. The actual opening size is .440 mm, but I think what you said makes sense. After discussing with the customer, it looks like it is the height which matters, more than the diameter. We have learned that the height of t

Re: solder balls and flux

Electronics Forum | Wed Mar 01 16:58:03 EST 2000 | Dave F

Robert: On your balls: Solder suppliers make several "standard balls" and can advise you. On your cleaner: Recycling water / direct to drain? Most batch cleaner suppliers can advise you on recycling and filtering systems to keep you out of troub

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