Electronics Forum | Fri May 29 14:35:05 EDT 1998 | Steve Gregory
| We are getting solder balls after reflow of surface mount components. We are using a no-clean paste and a new jar seemed to help for a little bit. Any ideas? Thanks in advance Hello Ryan, There's a quite a few things that can cause solder bal
Electronics Forum | Fri Apr 24 20:33:06 EDT 1998 | D.Lange
| Looking for anyone who has experience with high temperature soldering. Need to determine why solder joints are failing. Thermocycling of unit is -40C to +140C, 30 minute dwell time, 10 sec. transition time | Your help is appreciated | Ed Holton |
Electronics Forum | Tue Apr 21 06:23:37 EDT 1998 | Michael Nedley
I teach Industrial Electronics courses at a 2 year College. We use Analog/Digital trainers with standard Breadboards for full size IC's. My problem is this, Alot of people in the manufacturing Industry have been gracious enough to send samples o
Electronics Forum | Tue Sep 09 20:32:10 EDT 2003 | davef
The maximum ratio of gold weight to solder alloy weight can be calculated, to help prevent a problem from excessive gold-tin intermetallic compound (i.e., AuSn4). For the equation and its derivation, please refer to "The Use of Capillary Action Measu
Electronics Forum | Mon Jul 19 14:58:50 EDT 2004 | mattkehoe
We have a need for expert opinions on a solderability issue. Our company prints and then reflows solder paste with no components in place. It is then washed and flattened with a special flattening machine. Usually, the paste fuses and spreads out
Electronics Forum | Mon Oct 23 12:58:28 EDT 2006 | grizzy
"Surface Mount Techniques has approximately 98 > percent of the world market share of large Panel > Stencil Printers". > > It sounds a little bit > strange to me, especially since I work for one of > the companys listed in their advertisement an
Electronics Forum | Mon Dec 28 08:51:45 EST 2009 | jax
What solder are you talking about and what reflow method are you using? High Melt Alloys: SN96 (Sn96/Ag4 or Sn96.5/Ag3.5) - Simliar to SAC305 although normally uses Rosin based flux that can required more extensive cleaning. Pb85 (Pb85/Sb10/Sn5) -
Electronics Forum | Tue Mar 01 11:19:47 EST 2011 | jeddmartens
I have no knowledge into PCB designing with surface mount components, all my experience has been with through hole components. I now have to design PCBs using surface mount parts. I have a few questions I was hoping someone could answer. Can a PCB w
Electronics Forum | Wed Mar 01 17:07:50 EST 2000 | Dave F
Brian: Several things: � Many CAD systems offer compliant pad design libraries � Look at IPC-SM-782 "Surface Mount Design And Land Pattern Standard" � Some times, component manufacturers have the best information about pad designs for their compone
Electronics Forum | Wed Jan 03 08:22:08 EST 2001 | G. English
Hi, all the best to you smt' netters for the forthcoming year. I am looking for a one stop shop for surface mount consumables, in particular, stencil IPA wipes, printer under screen cleaning rolls, gloves, dry wipes, squeegee blade replacements etc
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