Electronics Forum | Thu Aug 10 21:23:25 EDT 2000 | Dave F
"Ahh, Beer! My one weakness...my Achilles Heel, if you will..." Homer J Simpson
Electronics Forum | Thu Jan 06 08:28:14 EST 2005 | pjc
Preheaters are a bit weak. Don't know if they have improved them lately.
Electronics Forum | Wed Sep 22 14:37:56 EDT 2004 | fastek
Take a hard look at the capabilities of your people first. If your organization is weak in manufacturing/process engineers I would stay away from Panasonic and focus more on Fuji. They are simpler to operate, program and maintain. Nozzles are cheap a
Electronics Forum | Thu Dec 21 22:31:28 EST 2000 | Dave F
Sorry, but I'm a bit fuzzy on the goal here. Let me be basic. The basic reasons for reducing the life of products before they're shipped are: * Design qualification. This highly accelerated test beats the living stuff out of products to identify d
Electronics Forum | Tue Mar 20 20:14:40 EST 2001 | davef
Electroplating [electrolytic] and dipping [HASL] are the two methods for applying solder coatings to features on boards. Disadvantages of electroplating lead / tin are: * "Weak knees" created at the edge of plated through holes. [I used to get weak k
Electronics Forum | Mon Oct 29 20:19:44 EST 2001 | davef
DON'T do it!!! The two problems you'll have are: 1 Poor manufacturing process control, resulting in weak solder connections. 2 Weak solder connections are stressed, when the board is straightened upon installation in the "box". There's several hits
Electronics Forum | Fri Sep 09 07:55:08 EDT 2005 | davef
This pattern indicates flex cracking due to excessive bending of the board or fixture after soldering. Ceramic is strong in compression, but weak in tension. When bending causes damaged parts, look at: * Board flexes, ceramic is strong in compressio
Electronics Forum | Tue Jul 01 13:45:12 EDT 2008 | realchunks
The actual solder joint occurs BETWEEN the part and the pad. Adding more solder on top will add strength slightly, just by being in the way when you pull on it sideways. A weak joint with a weeks worth of solder on it will still be weak. Solder is
Electronics Forum | Thu Aug 06 19:20:09 EDT 2009 | boloxis
easy, just dip the ICs on a very weak solution of Nitric Acid, by very weak I mean like drops of Fuming Nitric acid in a half full DI water beaker. Place the beaker on a Ultrasonic bath and dip/shake the ICs in the solution in 5~ 10 seconds only. You
Electronics Forum | Mon Mar 19 11:26:21 EST 2001 | Steve
Another issue is that once solder paste has been reflowed, the majority of the flux is gone. If it is reflowed again without solder flux, the risk of introducing oxidation to the component leads is increased, thus creating a weak solder joint.
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