Electronics Forum | Wed Feb 04 06:48:34 EST 2009 | muarty
Has anyone any experience of using completely dry under stencil cleaning. I have recently been sent some information regarding Micro�Wipe� FP cleaning rolls. The claims about their performance are pretty good, but then what are they like in reality?
Electronics Forum | Wed Feb 04 08:00:30 EST 2009 | milroy
Hi, It depends on the stencil thickness, aperture size and the component footprint. For exampl if you have a PCB with QFP,CSP,QFN & BGA parts then this underwiper is not useable because you will still find solder cream deposits in the apertures aft
Electronics Forum | Wed Feb 04 09:21:09 EST 2009 | rameshr
Dear Sirs, We are looking for a quality/EHS approved vendor/make/part for safety products - gloves ,glasses for the following applications, 1.SMT Sceen printing Operator. 2.Reflow & Wave Soldering Operator. 3.PCB Cleaning. We would like to get detai
Electronics Forum | Thu Feb 05 02:34:05 EST 2009 | sachu_70
Hi Manuel, most passives are chip components. These tend to self-center/align during the reflow process. However, you need to ensure that there is a uniform balanced solder paste deposit. I had tried few such ovals in earlier stencil designs and resu
Electronics Forum | Wed Feb 04 21:06:07 EST 2009 | shan
I'm looking for test labs in Taiwan that are capable of performing ionic contamination testing on small to medium sized SMT boards. I'm interested in both ion chromatography and ROSE test methodologies. Is anyone aware of any labs performing contami
Electronics Forum | Tue Feb 10 00:57:50 EST 2009 | emmanueldavid
Philip, Pl note that there is one more fabricator from Malasia, whom we found to be up to the mark with Wave Soldering Pallets constructed with Durastone/CDM Durastone. They also offer ESD Protected to match ESD guidelines of Assembly & Photo Sensi
Electronics Forum | Tue Feb 10 01:18:28 EST 2009 | emmanueldavid
Philip, Pl note that there is one more fabricator from Malasia, whom we found to be up to the mark with Wave Soldering Pallets constructed with Durastone/CDM Durastone. They also offer ESD Protected to match ESD guidelines of Assembly & Photo Sensi
Electronics Forum | Thu Feb 05 22:16:14 EST 2009 | adamcrum
So there is no "DI Water" standard, but what is max conductivity I should have coming from my water before I let it touch the boards? We just installed a DI system in our plant down in Mexico and our water analysis shows we now have HIGHER conductivi
Electronics Forum | Fri Feb 06 08:22:32 EST 2009 | davef
Conductivity is the recprical of resistivity. So, ... * 10 uS = 100k ohm * 5 uS = 200k ohm * 2 uS = 500k ohm We're unsure of the units of your conductivity of "1,566 uS/cm". Also, is that one thousand, five hundred, sixty six?
Electronics Forum | Mon Feb 16 14:18:30 EST 2009 | jorge_quijano
1000 0402's, Micro BGA, QFP 0.4mm pitch, TSOP), we are trying to know what kind of equipment do you recommend to use in our factory, we already have Screen Printer, Chip shooters, Reflow oven, AOI, Stencil cleaner (manual), X ray, ICT... what else do
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