Electronics Forum | Fri Jun 12 23:52:42 EDT 2015 | armandogomez
Reflow? or Wave solder? or selective wave solder? For what I understand you problems is with the preheaters you have a high temp that dries up the flux, and when hits the wave is doing that, do you have a thermal profiler? what's the temp just befor
Electronics Forum | Fri Feb 09 18:54:49 EST 2018 | duchoang
Can you share the oven profile? For me it looks like the profile has fast ramp up and short TAL period. How many zones the oven have?
Electronics Forum | Fri Aug 16 12:57:17 EDT 2019 | emeto
To be in the range of profile for a paste, doesn't mean it is ideal. Check temperature on the Side A components while running side B profile.
Electronics Forum | Thu Jan 30 10:12:00 EST 2020 | emeto
More detail Jinesh. Profile, datasheet of the part, stencil design, PCB finish, soldering material. Initially I am assuming you use pallet to reflow 0.2mm thick board.
Electronics Forum | Tue Aug 09 13:25:18 EDT 2005 | russ
Try cooling them down in the profile.
Electronics Forum | Fri Nov 25 20:57:30 EST 2016 | sarason
You guessed right. Not hot enough to get good reflow. regards sarason
Electronics Forum | Thu Aug 30 14:49:54 EDT 2018 | benreben
Don't search in your profile or your process. The problem is the PCB!
Electronics Forum | Fri Nov 04 11:29:46 EST 2005 | JeffP
Jay, I work for a company that manufactures batch reflow ovens however, I will try to be as subjective as possible. For the most part, what others have posted is true. Yes, there is one heating chamber and if the heater does not have enough power
Electronics Forum | Mon Apr 26 16:39:46 EDT 1999 | JohnW
| | Hello all, | | | | Our guys here still have some questions on the "optimized" profile which sees a more moderate ramp up straight to reflow temperatures versus the conventional profile which has a plateau at around 150 Celsius. If the optimized
Electronics Forum | Fri Jun 20 18:32:55 EDT 2008 | hegemon
Back when I used to do a lot of these style devices we ran into the same problem you are describing. Use a pattern for the center pad area and keep the total coverage to about 68% of the pad area. Diagonal Stripes, tic tac toe, cloverleaf, dot array
