Electronics Forum | Thu Oct 05 10:37:10 EDT 2006 | David
Hello all, We have problem with voids in one of our product. We are soldering IC (package SO8) with under the components grounding connection. The ground pad for this component has 3 via holes (before producing we have to cover this 3 holes from b
Electronics Forum | Mon Oct 23 12:58:28 EDT 2006 | grizzy
"Surface Mount Techniques has approximately 98 > percent of the world market share of large Panel > Stencil Printers". > > It sounds a little bit > strange to me, especially since I work for one of > the companys listed in their advertisement an
Electronics Forum | Thu Nov 02 18:56:10 EST 2006 | darby
John, As Dave says, never clean raw paste. Let it sit for at least 24 hrs if you can and use a plastic spatula to wipe off the bulk of it. The "drier" the paste the easier it is to remove without it travelling down vias etc. You will then have to cho
Electronics Forum | Mon Nov 06 22:01:44 EST 2006 | realchunks
Why a clean room? Or do you mean an environmental room to control temp and RH? Any way, to answer you question, your wave and oven can care less about RH. Just don't keep them at 100% RH. Static can easily be handled with lower RH and proper grou
Electronics Forum | Fri Nov 17 16:24:18 EST 2006 | billwestiet
I'm in North Attleboro, small world. To answer your question, you can deposit small dots of paste with a syringe. Kind of tricky work, and there are small stencil soluions out there fairly inexpensively. See http://www.minimicrostencil.com/ (I do
Electronics Forum | Tue Nov 21 12:35:59 EST 2006 | CK the Flip
It probably depends on the Silver content. We are also using Sn62Pb36Ag2. The paste manufacturer told us that the reason for the small silver content was so that it could wet better to the lead-free component and board finishes bearing silver.
Electronics Forum | Fri Dec 15 18:36:46 EST 2006 | Grant
Hi, I have noticed we are getting residue on our wave pcb's and it's worse with lead free, since we changed to the flux we are using. We are currently using Avantec VOC Free flux model Ecofree 303. It looks like it's made in Malaysia. Does anyone h
Electronics Forum | Wed Dec 20 23:29:32 EST 2006 | Jack
Hi all, Is there anyone know the correct way to obtain the accurate temperature profiling for oven reflow? Are below claims true? (1) Instead of full components on the PCBA (Motherboard), the profile taken from PCBA with few components can be cons
Electronics Forum | Thu Jan 04 15:39:49 EST 2007 | realchunks
Is it a failure or a schedule overdue? If it's a failure check the vacuum sensor in the exhaust. You should be able to locate the straw and follow it back to the diaphragm. You can adjust the diaphragm. Or you can electrically jumper past it.
Electronics Forum | Mon Jan 15 01:13:25 EST 2007 | grantp
Hi, Does anyone know where to purchase the connectors? Specifically bulkhead connectors or PCB mount connectors. I am thinking about doing a general purpose SMEMA box that has a Basic Stamp in the core, and some buttons so I can use it for general
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