Electronics Forum | Mon Jan 17 17:38:29 EST 2011 | bandjwet
All: I am reaching out to get some suggestions on the right flux to use as well as a recommended cleaning process for soldering a KOVAR RF shield using 80/20 Au/Sn solder to a ceramic hybrid. The recommended profile is 4-5 min at 280C and at least
Electronics Forum | Mon Nov 13 12:48:14 EST 2000 | Chris McDonald
Anybody have problen soldering a IC with leads that are copper base, plated with 300 u inch min. of 80Sn/20Pb solder? We are having problems soldering a 16 mil QVSOP to a Gold Flash Board. Thanks Chris
Electronics Forum | Tue Dec 11 16:09:02 EST 2001 | mparker
What is the composition of tin to lead in the "Liquid Tinner"? It's been my experience that the higher the tin, the duller the solder appears. I've used 63/37 and 70/30 that both look shiny, whereas 80/20 does look dull. Just another thought to cons
Electronics Forum | Mon Dec 13 12:02:20 EST 2004 | Rob
I've seen 2 types from China, one type was an amazing copy (Fuji supplier's factory back door possibly?) and the other was a cheap copy. The cheap copy was adequately functional, but I wouldn't want to bet on it's long term life.
Electronics Forum | Mon Dec 13 12:29:12 EST 2004 | fastek
Interesting Rob. The fake ones that I was told about would fail within minutes as the index wheels would be reduced to metal shavings right away.
Electronics Forum | Tue Jun 01 19:23:15 EDT 2004 | Ken
profile it for the tin/lead paste. The tin in the solder paste will begin to disolve the sac ball. This is exactly the same scenario as 90/10 (80/20)high temp balls found on ceramic bga and many super bga devices (except the sac balls are now tin r
Electronics Forum | Sat May 28 05:18:59 EDT 2005 | finepitch
I agree with Claude's comment here. As the good old 80/20 rule suggests, 80% of your lost $$ may be coming from 20% of the parts on your list. So, I would spend 80% of my efforts to sort the list by "loss in $$" and try to reduce the loss of such.
Electronics Forum | Mon Jan 30 07:22:51 EST 2006 | Rob
Hi Nick, It's probably one of two devices - MOC8020 or MOC8021 depending on the CTR (Current transfer ratio). I have always used http://www.icmaster.com for older semiconductor datasheets. (Back in the old days we used to use the IC master data boo
Electronics Forum | Fri Jan 18 14:38:07 EST 2008 | chef
Try asking your stencil supplier. One of mine recently gave me a sales pitch for something like you want. If you are mechanically adept and enjoyed Lincoln Logs, Erector Sets, Lego's, Panels and Girders toys then look at 8020.net. Extruded aluminum
Electronics Forum | Sat Jan 19 07:06:40 EST 2008 | jdumont
Check stanley supply and techni tool. They have rack with no doors but you could prob fab something up. 8020 stuff isnt cheap either. I bet it would cost about 400+ to build a stencil rack plus all the labor and thinking involved. That being said, I
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