# 165 solder and balls and 0.13 results

## Electronics Forum: solder and balls and 0.13 (Page 1 of 17)

### 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

### Re: solder balls and flux

Electronics Forum | Wed Mar 01 16:59:44 EST 2000 | Dave F

Robert: Expect a 0.033" raw ball to be within 0.022" of the pad, after reflow. To be clear, that�s not a matter of shrinking by 33%. The volume of solder on the pad is the same as the volume of solder in the raw ball. It�s just that the solder is

### Re: solder balls and flux

Electronics Forum | Wed Mar 01 16:59:44 EST 2000 | Dave F

Robert: Expect a 0.033" raw ball to be within 0.022" of the pad, after reflow. To be clear, that�s not a matter of shrinking by 33%. The volume of solder on the pad is the same as the volume of solder in the raw ball. It�s just that the solder is

### 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

### 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 | Thu Jun 22 09:50:48 EDT 2017 | capse

Are you using nitrogen in your soldering process?

### Soldering robot and solder balls

Electronics Forum | Sat Jun 24 07:49:58 EDT 2017 | ranap121212

@Capse, No but the machine has such a construction, I can not this change

### 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.

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