Electronics Forum | Mon Jun 05 14:08:41 EDT 2000 | Bob Smith
I am trying to find the plastic family used in manufacturing the bodies of integrated circuits. Usually our product is fully encapsulated in ScotchCast however a new application requires part of a pressure sensor chip to be free of encapsulant. The S
Electronics Forum | Tue May 30 08:07:56 EDT 2000 | David Lazarus
I am a senior industrial engineering student at the University of South Florida. For my Facility Design class, my team has chosen to design a PCA plant that will make one product. We are looking for an obsolete or in-service circuit board assembly
Electronics Forum | Tue May 23 13:08:54 EDT 2000 | John Thorup
I second Wolfgang. Welcome, It's good to hear from someone who wants to design something we can build. Another useful resource is the land pattern book from SMT Plus www.smtplus.com 831/438-6116 Also useful are the component mechanicals available (fr
Electronics Forum | Wed May 03 09:50:50 EDT 2000 | C.K.
Which wave solder flux are you using and what types of preheaters did you have on both your old econopak and your new vectra? From my past experience, an alcohol-based flux does NOT work well with Convection style preheaters....the flux burned off t
Electronics Forum | Fri Apr 14 10:16:27 EDT 2000 | PeterB
Dave, 'Free Issue' here in the UK means material (be it PCB's or anything else) supplied by our customer from their stock and not charged to us. That is why we sometimes cannot control the design parameters. Many thanks for the suggestions. We alre
Electronics Forum | Tue Apr 04 07:46:03 EDT 2000 | Donnie
Neil, We currently use only visual inspection with a magnified lamp and actually brush the board after the wave process to help knock off any solder balls. You wanna use an ESD sensitive brush material. Camel hair is what we use. It works real wel
Electronics Forum | Thu Mar 09 22:03:04 EST 2000 | Charles Leech
DaveF: Since these SMT "spounges" get wet in Singapore and they got to get dry in Singapore, the airfreight idea won't work. I don't think the airlines would be too thrilled with a teathered ballon floating 10,000 feet in the air over the city. STAT
Electronics Forum | Fri Feb 25 04:28:49 EST 2000 | Sze-Pei LIM
We faced terrible void issue while using Sn96.5Ag3.5 solder paste, more than 20% void. We tried adjusting the reflow oven profiles but we did not have much success in reducing the void. Generally, we find quick preheat, high peak temp. and fast cooli
Electronics Forum | Fri Feb 25 14:00:57 EST 2000 | Bill Schreiber
Dave is correct, a stencil cleaner is a good way to go. There is an article on our web site, by Dick Clouthier, that covers cleaning misprints with various types of stencil cleaners. Go to www.smartsonic.com and click on "Recommended Reading" to fi
Electronics Forum | Mon Jan 29 20:25:54 EST 2001 | davef
I know you're talking Humiseal, but this may help http://www.loctite.com/electronics/elec_tech_index.html Conformal Coatings (PDF Documents) "Conformal Coating Overview" (Lester D. Bennington, Senior Development Chemist and David Crossan, Manager