Electronics Forum: solder-ball (Page 10 of 142)

Solder Beading Solder Balling

Electronics Forum | Wed Aug 04 15:05:17 EDT 1999 | Tom B.

Hello Netters, Can anyone provide me with info or where to get info on acceptability of solder beads and solder balls? Thanks for any help Tom B.

Surface Mount Solder Balling

Electronics Forum | Fri May 29 13:37:18 EDT 1998 | Ryan Jennens

We are getting solder balls after reflow of surface mount components. We are using a no-clean paste and a new jar seemed to help for a little bit. Any ideas? Thanks in advance

BGA solder ball composition

Electronics Forum | Mon Nov 19 05:49:44 EST 2001 | Cheng

The BGA solder ball composition is 62/36/2 Sn/Pb/Ag, does any problem exist for the solder joint reliability? And what is the difference on SMTA process between this and the normal 63/37 ball?

Effect of PWB vias on solder ball temperature

Electronics Forum | Wed Jan 30 06:45:01 EST 2002 | yaq

Hi, Has anyone done some research (measurement/simulation) on the effect of PWB vias on solder ball temperature of the component? Would this have some effect on solder joint reliability especially during power cycling? Any comments will be appreciat

Effect of PWB vias on solder ball temperature

Electronics Forum | Thu Jan 31 04:48:04 EST 2002 | yaq

Hi, Has anyone done some research (measurement/simulation) on the effect of PWB vias on solder ball temperature of the component? Would this have some effect on solder joint reliability especially during power cycling? Any comments will be appreciat

reduce solder ball defect

Electronics Forum | Sat Mar 16 11:06:48 EST 2002 | Lau

Hi, I am searching a method of reflow process for less / nothing solder ball defect. Thank Lau

reduce solder ball defect

Electronics Forum | Tue Mar 19 09:29:08 EST 2002 | Basaran

What type of solder ball defect that you want to avoid is it voids or misregistration or ball-pad adhesion. Cemal Basaran

Solder Balls

Electronics Forum | Mon May 20 16:56:24 EDT 2002 | Gary

Excess slump of paste and mis-registration can cause solder balls along with moisture. Use same date code of pcb and run with no components, paste only. Also pre-bake boards with humidity sensor in oven. If high humidity, moisture and solvent residue

solder ball shear test question

Electronics Forum | Fri May 17 16:37:28 EDT 2002 | Tom Druan

I was wondering if anyone could direct me towards documentation on shear test methods/apparatus to test the bond integrity of a solder ball to its substrate. Thanks.

Solder Balls in Vias

Electronics Forum | Tue Jun 04 13:13:58 EDT 2002 | slthomas

Another thing we see is solder balls (sometimes fines, sometimes larger stuff) in the vias after a misprint has been poorly cleaned, as in wiped down but not washed. They end up in the plated through holes too, but those get nicely cleaned up in the


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