Electronics Forum | Mon Feb 10 14:34:56 EST 2014 | jigo91
Hi, I wanted to know how can we test our paste quality, as viscosity, temperature in which it is delivered to the SMT line and other variables that can affect our paste dispense or soldering. Our concerns are that paste quality may be causing solde
Electronics Forum | Tue Feb 11 12:44:32 EST 2014 | cyber_wolf
Jigo, We have never had a need to do internal testing on solder paste, and your paste supplier should be able to tell you what the correct operating temperature range is. All of the big names in solder paste have tight quality control and I suspect t
Electronics Forum | Tue Feb 11 09:01:54 EST 2014 | emeto
You should get your paste in ice(dry ice). Then you should keep it in a fridge. Many pastes now have 1month shelf life(after you take it out of the fridge). If you follow all the above, you might be having: 1. Lot problem - try different lots of you
Electronics Forum | Tue Feb 11 09:47:53 EST 2014 | spoiltforchoice
Perhaps a photo of the faults you are encountering might shed some light on the issue. I would think it would take some extremely poor paste handling or paste for the paste itself to be the root cause of what you seem to be describing. I would be inc
Electronics Forum | Thu Feb 13 19:08:31 EST 2014 | darby
Have to agree with Sr Tech and Spoilt - you'd have to really mistreat your paste these days for it to be the root cause. However, try another paste to eliminate that; making sure you abide by the suppliers specs. Pad design, stencil design,(includin
Electronics Forum | Mon Feb 10 16:59:57 EST 2014 | hegemon
It is sort of a self answering question if you come in from the solder paste angle. First....start gathering data. Check every day, or every new paste jar, for: Storage conditions (temp), paste expiration date, ambient temp and humidity where yo
Electronics Forum | Mon May 28 16:39:33 EDT 2001 | Ian T
hi we are expanding our plant, and the contractor is asking for air quality guide lines for the new area. i haven't been able to find any standards can anyone help? thx Ian T
Electronics Forum | Thu Dec 17 16:42:26 EST 1998 | Dave Clements
Has any anyone established / published quality standards for BGA solder joints? Is IPC-A-610 in process of adding standards for BGAs?
Electronics Forum | Thu May 26 21:13:17 EDT 2005 | thaqalain
Factors that affect the solder joint quality are *envirinmental condition(i.e.,humidity) *contamination *Flux residues *all of the above
Electronics Forum | Thu Dec 17 17:34:26 EST 1998 | Earl Moon
| Has any anyone established / published quality standards for BGA solder joints? Is IPC-A-610 in process of adding standards for BGAs? | The debate continues. I have felt for some time a maximum 20% voiding is allowable under certain conditions (w
.gif)
