Electronics Forum | Mon Aug 25 18:27:58 EDT 2008 | dyoungquist
Here is a post of the current profile. I have contacted our solder paste provider. They give a general lead free reflow profile guide. All that shows is genreral recomendations for temperature ranges and time ranges in each section of a typical
Electronics Forum | Thu Aug 28 11:13:53 EDT 2008 | janz
Have you tried to run the same process but with diffrent solder paste manufacturer.? This give you information whether paste is ok. Try also print paste on the bare board and run through reflow oven. Check 2-3 boards. Is it the same places where i
Electronics Forum | Tue Sep 14 18:33:38 EDT 1999 | Mark Belec
I'm looking for some good articles on reflowing of double sided SMT boards. I'd like to come up with a process for low volume prototyping, but need to understand the do's and don'ts.
Electronics Forum | Thu May 01 18:01:38 EDT 2003 | jym2000
Just take care about reflow profile with this kind of product, you can get a bad-formation in your PCB (Flexcable or your flexcircuit) however you want to call... This bad-formations looks like a solderballs (Microscopio) Regards Jesus
Electronics Forum | Fri Oct 10 13:35:56 EDT 2003 | swagner
Does anyone have any data about the dangers of reflowing BGA's twice? I have a customer that is concearned about cracking in the intermetallic layer after the second pass. Thanks in advance.
Electronics Forum | Tue Jan 13 07:44:48 EST 2004 | Chris Cottreau
Upon inspection were seeing most if not all of these SOT 23 are not reflowed properly. The components just sit on top of the solder, this is creating insufficients, poor wetting, etc. There are about 25 SOTS per board, 2 boards per panel creating alo
Electronics Forum | Tue Jan 13 14:05:00 EST 2004 | Chris Cottreau
There are 5 different types of SOT's from 5 seperate reels, all of the other parts reflowed fine. Will check the profile. Thanks
Electronics Forum | Mon Aug 25 18:24:25 EDT 2008 | dyoungquist
The problem is occuring on more than one part # of our 0402 components. That is why I am looking at the reflow oven process very closely.
Electronics Forum | Wed Aug 27 22:39:23 EDT 2008 | davef
Here's a good thread on lead free reflow recipes http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=47575
Electronics Forum | Fri Aug 29 07:39:44 EDT 2008 | realchunks
Slow your conveyor down and see what happens. Your profile looks like you just barely get into the reflow zones you need to be.
