Electronics Forum | Mon Dec 11 15:50:01 EST 2000 | externet
Hi ! Try fresh DRY solder paste... Keep solder paste in a sealed container until the moment of use. Humidity absorbed by the soldering paste becomes vapor violently at the moment of heating it , expelling the solder in form of balls everywhere.
Electronics Forum | Fri Dec 08 17:56:36 EST 2000 | Dave f
Check the fine SMTnet Archives. Some people have a difficult time using the fine Archives, if so, email me and I'll try to help further.
Electronics Forum | Wed Dec 06 20:56:19 EST 2000 | Dave F
Why sure, we use WI-10-02-05, BGA Inspection Criteria, bgainsp.doc, 00, 9/15/99, based on an article in Evaluation Engineering Magazine, Sept �99, p130.
Electronics Forum | Fri Dec 08 17:49:24 EST 2000 | Dave f
Here ya go. Now this is what we used to write our work instruction that I referenced earlier.
Electronics Forum | Wed Dec 06 16:44:23 EST 2000 | CAL
We are currently using an Aqueous Technologies Ultrasonic Stencil cleaner with Petroferm Chemistry.We Just drop the blades in turn on....come back 10 minutes later...squeeky clean. Cal
Electronics Forum | Wed Dec 06 10:41:06 EST 2000 | Travis Slaughter
Sounds to me like they used conductive epoxy instead of plating the vias. I had to deal with boards like that when I was doing consumer electronics developed in Japan.
Electronics Forum | Fri Dec 01 01:42:09 EST 2000 | PeteC
I recommend paste print-reflow the bottom side then use a selective wave solder pallet to mask the SMT components on the bottom side. PeteC
Electronics Forum | Thu Nov 30 21:27:26 EST 2000 | Dave F
What is this equipment? What was the result of their training course? What does their factory support tech say? What does their local sales rep say?
Electronics Forum | Mon Dec 04 20:30:09 EST 2000 | Irwan Margono
Thank you for your advise Dave. However, I still don't understand what does it mean by "isolated mass reflow".
Electronics Forum | Thu Nov 30 12:01:13 EST 2000 | Chris
I know you can buy these devices. They are used by hearing impaired people. Not sure on price but I know you can purchase them. Not sure from who.
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