Electronics Forum | Tue Mar 21 21:03:55 EST 2006 | davef
1 Chatter about mask opening � No BIG problems with these statements. It�s just that you may need to tailor your reflow recipe to minimize these escapees. 2 Stencil design - Any area ratio below 0.66 is going to very challenging to print, as you ca
Electronics Forum | Fri Mar 24 13:35:53 EST 2006 | bvdb
If one considers that a computer used to fill a good sized room and now can sit in/on your hand I would say that the electronics industry has already greatly reduced the use of lead. Microelectronics keeps getting smaller with fewer interconnects
Electronics Forum | Tue Mar 28 13:29:45 EST 2006 | solderiron
SN100C, not as aggressive towards other metals as are other High tin lead free alloys. Why? Sn63/pb37 The lead prevented the tin from being very aggressive. SAC305 no lead, silver instead. Silver doesnt block Tin from it's aggresiveness. SN100C no si
Electronics Forum | Sat Mar 25 07:43:20 EST 2006 | smartasp
Hi You all We use no clean flux in our lead free wave soldering process and have unacceptable residues. The provile is spot on. If I reduce the flux amount the holes won't be filled and border on the IPC II specs. The customer does not accept partia
Electronics Forum | Mon Mar 27 10:26:59 EST 2006 | slthomas
It seems highly unlikely that you could actually trap enough air in your paste for it to be releasing air after you've worked it a few times unless it's not rolling properly to begin with. I suppose maybe a contaminant could be present that could b
Electronics Forum | Fri Feb 16 11:37:58 EST 2007 | hectorsmtnet
I have been using the Loctite Multicore WS200 with great results for the last two years. We also use the lead free version WS300. I like the flux chemistry (which is the same for both products); it really withstands long soaking times and with very g
Electronics Forum | Thu Apr 06 15:35:04 EDT 2006 | jbrower
Larry, Are you a glutton for punishment, a masochist, just so sure that your answers are right and or important, or are you just REALLYYY bored at work and decided to be a dumb ass on the forums.. Loading boards into a flow solder machine for 12 ye
Electronics Forum | Thu Mar 30 08:38:58 EST 2006 | Dan
We have this panel that is Gold Flash. Am I correct in assuming this is technically a lead-free panel then? We are running a WS paste, and the QFN28 has balls of solder instead of a fillet. My Max temp is 216, and the TAL was between 52-57 secs with
Electronics Forum | Mon Apr 03 11:48:31 EDT 2006 | stepheniii
How big are the parts? I've only seen a few parts that ever fell off. Double sided reflow is probably the most common these days The surface tension is powerful. I think the lower limit of temperature is what you would have to worry about with epox
Electronics Forum | Thu Apr 06 16:42:44 EDT 2006 | russ
this is all good jay but would WML have to say about this paste? I'm gonna wait for his response before I do anything! I am bringing in some samples of this soon to try for myself. I have a part that the manufacturer says to run with a paste with n
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