Electronics Forum | Thu Mar 29 13:29:08 EDT 2007 | JD
Ewwww metal mini stencils? Try http://www.circuitmedic.com/products/stencils.shtml We use their flextac stencils all the time and they work perfect. You can get a couple uses out of each of them if youre careful too. Just line it up under a scope and
Electronics Forum | Sat Apr 07 01:15:45 EDT 2007 | Haris
Hi I dont think there is a stencil problem or a printing one but i think you should check you paste specification regarding 20 mil pitch i.e. its ball size in microns so that you know Is that paste can be use for this type of components or not. Secon
Electronics Forum | Fri Apr 13 12:24:07 EDT 2007 | teamcanada
We assemble for a customer that is having an inconsistent low level analog interference we believe with the no clean flux residue from Alphas OM5100 solder paste. We are considering testing Amtechs 4300 water washable no clean paste. We will test bot
Electronics Forum | Mon Apr 23 15:28:48 EDT 2007 | ev
To date we are a small niche CM doing prototype and small runs. Any testing we do now is purely functional tests on the pcb ass'ys. In some cases the hardware and software is supplied by the customer, in most cases it's one or the other. We want to e
Electronics Forum | Mon Apr 30 22:41:29 EDT 2007 | davef
Cross: IPC nor anyone else calls out recommended pressures for washers used to clean circuit boards. IPC and the other standards setting folk are in the business of defining the expected results or outputs of processes or acceptance criterion. They
Electronics Forum | Wed May 16 18:10:15 EDT 2007 | ratsalad
cman, Which placement machines do you use? What software do you use to program them? There are several solutions out there such as CAM CAD, Valor, CircuitCAM, whatever Unicam is called these days... I can't keep up with the acquisitions. None
Electronics Forum | Fri May 25 00:31:07 EDT 2007 | Mike Konrad
Never use a water softener for defluxing. They add sodium to the water which is bad for boards. The white residue may be flux. If that's the case, either the dishwasher is not powerful enough or the wash water is not hot enough. Another possibili
Electronics Forum | Sat Jun 09 07:59:14 EDT 2007 | davef
A keypad overlay is used to adapt one basic keypad design to a variety of applications. The overlay is positioned on top of the key board to match functions on the overlay with buttons on the keypad. The user selects a function on the by pressing t
Electronics Forum | Wed Jun 13 08:24:30 EDT 2007 | davef
Most often, when people talk about a dishwasher, here on SMTnet, they're talking about a batch cleaner, not a dishwasher from Sears, or someplace like that. For limited applications, a home use dishwasher will do a perfectly adequate job of cleaning
Electronics Forum | Wed Jun 27 11:59:55 EDT 2007 | samir
*Preheat zone *Maximum slope is a time/temperature relationship that measures how fast the temperature on the printed circuit board changes. The ramp�up rate is usually somewhere between 1.0 �C and 3.0 �C per second, often falling between 2.0 �C and
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