Electronics Forum | Mon May 17 02:06:57 EDT 2004 | johnwnz
Look here: _a class=roll > href="http://www.aimsolder.com/techarticles/tech%2 > 0sheet%20BGA%20voiding-%20reducing%20through%20pro > cess%20optimization.pdf" > target="_blank"_http://www.aimsolder.com/techartic > les/tech%20sheet%20BGA%20voidin
Electronics Forum | Mon Feb 20 20:57:35 EST 2006 | Cal Kolokoy
The ramp sets the stage for flux activation, and if ramping in a linear fashion, burning off some of the volatiles, but yet preserving the activators. The ramp is also intended to preheat the SMDs to prevent thermal shock. Most solder paste data sh
Electronics Forum | Wed Apr 09 17:39:30 EDT 2008 | diesel_1t
Hi. I know that this is one of the mos common threads here, I have been doing some research, but i didn't find any similar. The main issue is that I have seen tombstoning since two weeks ago, it is more characteristic on 0603 resistors (Stackpole e
Electronics Forum | Tue Feb 13 15:56:16 EST 2007 | darby
Campos, This is a direct reply I recieved from Indium, (thanks to Rich Brooks), in late 2004 regarding SMQ230. I have followed these guidelines with good results using ENIG finish. Same also applies to Indium 5.1 apply to both alloys (SAC 387 and 305
Electronics Forum | Thu Jul 20 12:30:29 EDT 2000 | Bob Willis
Personally I would go for one alloy it just makes it all simple to control. I have only used tin/silver and tin/copper so far with good process results. Reflow is relatively straightforward, I have had more shorts with wave on tin/copper. To date I
Electronics Forum | Wed Jun 13 16:56:19 EDT 2001 | gsmguru
The only ones we've tried so far are Indium SMQ92 & AIM NC251 + one from Sinju (SP ?) that I can't remember the Part # for. They all printed fairly well. The pump seems to be a bit more forgiving than traditonal blades. The Rheo pump may mask some pa
Electronics Forum | Thu Aug 19 09:58:14 EDT 1999 | John Thorup
| | | we've received an inquiry if lead free solder for solder dips or surface mounting (cream solder) is available on a technical scale | Dr. Weber I'm not sure what you mean by "on a technical scale" but various no lead alloys are available in
Electronics Forum | Thu Apr 22 14:09:50 EDT 1999 | Rick
| | | Do solders exist that are both lead-free and low-temperature (e.g. 100-170 Celsius range)? If so, who supplies these materials? Any websites or contact information would be most helpful. | | | | | | Also, I am not an expert on soldering, s
Electronics Forum | Wed Oct 28 17:30:55 EST 1998 | Chrys
| | Can anyone supply me with info on determining the volume of paste left on a pad once reflowed compared to the intial amount put down? Is there a formula or something? | | | That information should be contained in the technical data sheets suppli
Electronics Forum | Mon Apr 15 21:27:16 EDT 2002 | djarvis
Everything we do is RF and have had no problems in the last 7 years with - Indium NC-SMQ92J, Sn63 Pb 37, 90.25% Metal, -325+500 mesh. Stencils are always 0.005" thick. However I will qualify that by adding we are an OEM and each new product may requi
