Electronics Forum | Thu Oct 05 07:23:34 EDT 2006 | Chris
Hi all experts, I have no background about PCB or SMT process. I am now encountering some issues after SMT - Unstable stitch bonding condition. I am now suspecting some contaminants remain on lead after cleaning. Therefore, how can I check th
Electronics Forum | Thu Oct 19 08:54:39 EDT 2006 | df
thanks for replies guys. I have a nearly Full RoHS Compliant bom with 1 device non-rohs. It is a soj28 device rated ( as best as I can find out at 225degC) Production are screaming for these boards - I put a thermocouple on the part and it hits 23
Electronics Forum | Mon Oct 30 20:24:35 EST 2006 | davef
As we understand it, you: * Get some nice BGA from your supplier * Find BGA to be packaged properly * Bake the BGA for 24 hours at [what temperature?] to reduce the potntial for damaging moisture sensitive components during following processes * Remo
Electronics Forum | Mon Nov 06 17:11:23 EST 2006 | gregcr
Hi All, I have vendors and even customers telling me that to properly run RoHS compliant products I should have ovens with more zones than my Heller 1500's. I have been running RoHS compliant product with these with very good results. So what ar
Electronics Forum | Mon Nov 06 17:36:39 EST 2006 | russ
G, it is called, "I just went to a sales seminar on pbfree" Show them your profile and call them to the table. Make them tell you specifically what is wrong with your profiles. and even better yet make them explain to you why the extra zones are
Electronics Forum | Fri Nov 24 10:03:08 EST 2006 | slthomas
"The fluid sometimes heats up to 105 deg F." Not sure what you mean here...is it set at 105 but rarely gets there, or is your temperature dependant upon another process to heat it up? Also, what temp is your rinse water? We used to use a U/S clean
Electronics Forum | Tue Nov 14 01:24:07 EST 2006 | CHITRA
In some of SMT PCBs, we get black coloured dull finish /soldering joints on leads for QFP. What is the reason for getting this black colour finish . If we use the same IC on some other board for the same pitch location ,we get good soldering result.
Electronics Forum | Tue Nov 28 15:59:48 EST 2006 | billwestiet
I had no idea what this thread would result in.... But, since we are on the "made in China" kick... There is serious immitation going on, that is true. But that will not be the case long term. There are already companies innovating, there is techn
Electronics Forum | Thu Dec 07 21:04:25 EST 2006 | Cmiller
We have two YesTech machines. They are a great supplier and you should at least test thier machine and make the call based on what is best for you. I have also owned an Agilent machine and unless they have changed dramatically, I would not consider t
Electronics Forum | Mon Dec 18 01:25:47 EST 2006 | seety1981
test engineer and product engineer... Hi all, Sorry if this topic is not suitable to be in this forum.. anyway,... i would like to know what the different of the jobs scope between the Test Process and Test Product engineer in semiconductor manufac
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