Electronics Forum | Fri Jan 16 12:03:46 EST 2009 | black5629
We are encountering similar problem as yesterdays posting, with solder not sticking to the pads but wicking to the leads on Leaded HAL finish boards, except we have tried two different solder paste lots with similar result. The oven profile and paste
Electronics Forum | Thu Sep 19 21:23:42 EDT 2002 | davef
I'm not saying that an eraser will necessarily work. What I'm saying is that some erasers may cause more trouble than the eliminate. Look here http://aic.stanford.edu/jaic/articles/jaic28-02-003_2.html We prefer a brand called Ruby Red. The "ole
Electronics Forum | Thu Feb 19 12:56:29 EST 1998 | Earl Moon
| I'd like someone gives me a tip for elemating of voids | in the mico BGA solder joint and the method of inspection | of them, very exactly. Voids in excess of 20% by each solder ball volume is cause for rejection. Causes are improperly managed proc
Electronics Forum | Tue Nov 07 12:07:10 EST 2023 | tommy_magyar
We are mounting an microphone device (SMT package) onto a PCB - how? Surface mount line or hand soldering? Contamination can only come from the solder paste, solder wire, flux, or burning the component/PCB assembly during hand soldering. Unless the
Electronics Forum | Thu Apr 20 02:27:11 EDT 2017 | pavel_murtishev
Mile, Please tell me more about your soldering process: - Are soldering process parameters the same for all three pins? - Is unsoldered pin connected to thermal heavy copper polygon? - What is your board surface finish? HASL? - Sn/Pb or LF process?
Electronics Forum | Fri Jul 04 12:32:33 EDT 2003 | sam
I need some advice about a problem that happened in a SMT LED: The failure symphoms of this SMT LEDs is that the LED body itself seemed to be functional, but when soldering on the products, it showed good wetting and soldering, LEDs are bright and l
Electronics Forum | Thu Aug 21 22:10:07 EDT 2003 | adlsmt
Well, for some reason the board house will pay for the boards but has some issue with paying for the parts on them. Why am I not supprised? Perhaps I have mis-diagnosed the problem. We have found two different board p/n's with the same type of defec
Electronics Forum | Mon May 10 20:46:25 EDT 2004 | davef
The three basic methods you can use to restore solderability on components are: * Highly active fluxes in a retinning operation. * Surface stripping chemistry and then a standard retinning operation. * Electrochemical conversion chemistry and then a
Electronics Forum | Thu Jul 27 04:29:18 EDT 2006 | pbarton
We have our waste water tested periodicially by a local lab to ensure that we are in compliance with local discharge regulations and as part of ISO14001 approval. This analysis includes levels of metals as well as organics, but it will tell you littl
Electronics Forum | Thu Mar 24 02:21:14 EST 2005 | Nifhail
I've heard about the dessicator i.e.useless in sealed bags, ineffectual, but have not heard about the Dryer Indicator will contaminate the immersion Silver/Tin surface. Can someone help? I was told that the dryer indicator (HIC) that contains sulphur
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