Electronics Forum | Thu Feb 21 14:40:42 EST 2013 | hegemon
My own preference in this arena is towards the forced air convection style preheat, the key being the forced air. Radiant preheat is too slow for some, and IR preheat can have other issues that convection (or radiant) will not. Zephyrtronics has bee
Electronics Forum | Thu Jun 22 11:09:11 EDT 2000 | C.K.
TYPE of Preheater makes a HUGE difference, as well. Infrared (IR) and convection, 2 of the most common types of preheaters, have very different heat transfer characteristics..... Convection heats your board more uniformly, so you'll see very small
Electronics Forum | Sun Oct 10 00:40:42 EDT 1999 | John
| I'm searching for a source for surface mount socket savers that accept a hand test socket (Yamaichi, Nepenthe etc...). Barring availibity of an SMT socket saver does anyone know a good technique for soldering socket savers into a .250" thick, 20+ l
Electronics Forum | Sun Jan 30 03:06:50 EST 2000 | Roni H.
Hi, The major reason is that the flux is still "wet", you should fix the temp. profile (specialy preheat zone) so the evaporation of flux carriers will be better (anyway not to much !). Recommended: 1st preheat zone heating to ~70C , 2nd&3rd prehea
Electronics Forum | Thu Aug 01 08:31:51 EDT 2002 | patrickbruneel
Christopher, It looks like you might be close to the solution for your problem because you mentioned that you can make the solderballing worse with lowering the preheat temp. This means that the preheating has a significant impact. I would suggest t
Electronics Forum | Fri Mar 28 09:44:11 EST 2003 | Claude_Couture
Your preheat temp seems excessive, what kind of solder paste do you use. can you try a max preheat temp of 140 degC? The reason for this is to let the solvents in the paste evaporate while keeping the activation of the flux for the very last moment b
Electronics Forum | Tue Jul 06 00:23:11 EDT 2010 | cksam
I am doing the case study of the component chip 0201 tombstoning problem. The significant causes was the reflow profiling preheat slope or ramp up rate. I really can't differential between preheat slope and ramp up rate. Could anyone here show me the
Electronics Forum | Fri Jun 08 17:06:41 EDT 2012 | tombstonesmt
We have many Pillarhouse Jade Mark II's in our facility. Lately design engineers have taken a liking of huge ground planes in boards. Quite honestly with topside heaters some of these boards were impossible to solder. True you can preheat with the no
Electronics Forum | Fri Oct 27 10:50:52 EDT 2017 | slthomas
Re: preheaters, YMMV, but my limited experience with SS is that without preheat these things have very limited value, even with boards that are not what you would think are thermally challenging. With preheat they seem to be able to do anything you
Electronics Forum | Wed May 03 09:50:50 EDT 2000 | C.K.
Which wave solder flux are you using and what types of preheaters did you have on both your old econopak and your new vectra? From my past experience, an alcohol-based flux does NOT work well with Convection style preheaters....the flux burned off t
