Electronics Forum | Thu Jul 29 21:11:13 EDT 2004 | davef
Could be lots of things. With limited information about temperatures, solder alloy, and cleaning; we'll swing for the fence that you got these solder connections very hot. So hot that Pb oxide is dominating the solder joint surface instead of the
Electronics Forum | Wed Jul 28 17:34:27 EDT 2004 | Steve Stach
Hi Ralf, This discoloration may be re-oxidation. Fluxes are supposed to do three things (1) remove oxide, (2) promote wetting, and (3) protect surface from reoxidation. The solder paste possibly is not protecting from reoxidation. Best Regards, St
Electronics Forum | Fri Dec 21 13:51:16 EST 2007 | howard stevens
Gentlemen, This is an interesting topic. If one refers to the Nihon Superior patent, they make the following claims. "Germanium makes the crystal finer when the alloy solidifies. Germanium appears on a grain boundary, preventing the crystal from b
Electronics Forum | Tue Sep 08 06:31:16 EDT 2009 | bandjwet
Does anyone have any experience with cleaning debris, removing oxidation from ICT (or for that matter flying probe)probes: Regards BWET
Electronics Forum | Mon Feb 26 09:35:48 EST 2001 | larryk
With allocation of components becoming a bigger and bigger problem, our company has had to purchase components from brokers. Because of this, I've found an increase of component contamination. What I mean is I have found problems with oxidation of th
Electronics Forum | Fri Feb 01 08:35:18 EST 2002 | gregers
PWB shelf life: HASL---3mth ENTEK-- 2mth Before using expired PWB, it is suggested to go thru HASL or ENTEK angain. Ask your VDR to serve this. Re immersion Au, mostly when the thickness under 3u"(micro pores present), the surface gold will serve a
Electronics Forum | Fri Feb 22 00:25:46 EST 2002 | Jones
There appears to be less of a blade sticking out of the holder than the MPM set up. Thats something we noticed recently. We have our mechanical attack angle set at 0 degrees right now, but we are in the process of changing this setting by 5 degrees t
Electronics Forum | Thu Jul 27 09:18:05 EDT 2006 | jdengler
The EU is a relatively new government on top of existing governments. This means they have even less real work to do than other governments. In order to exist they must do something. With a growing environmental movement this provides a great way
Electronics Forum | Fri Sep 26 16:49:46 EDT 2008 | janz
what about tube (could be transparent) with opening at the bottom to pick up by operator and loading new fresh jars from top (vertical tower of solder jars). Each time when operator takes jar next one appears on the bottom etc.
Electronics Forum | Wed Oct 23 21:45:17 EDT 2019 | ixqprint
100% appearance does not mean that programming is correct, can only say that the general direction is correct, the specific small details should be improved during the operation.
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