Electronics Forum | Fri Jul 26 17:02:07 EDT 2002 | davef
Never heard of flux residues forming a lense. The first thing that comes mind when thinking about your 'fog test' is: Ionic Contamination While this seems pretty far afield from your interest in optical effects, I'll continue briefly. A reverse
Electronics Forum | Fri Oct 11 17:30:37 EDT 2002 | peterson
Ok, I can't resist. I agree that a rep should be allowed to contribute if he/she identifies themselves. There will always be a conflict between technology/information and sales. Here's another example. If you are reading say, Circuits Assembly or SMT
Electronics Forum | Mon Oct 27 09:56:09 EST 2003 | sp1
A light emitting diode or "LED" doesn't care about voltage, it will light with approx. 10 to 20 milliamps of current. In a 12V system (such as an auto), a resistor of 1K ohms is ideal. At 12V, this allows about 12 mA of current, at 13.8V (approxima
Electronics Forum | Mon Nov 17 14:14:15 EST 2003 | blnorman
The main function of the test is to evaluate the solder mask. Basically you are testing three samples: #1 - No solder mask, #2 - solder mask without solder, and #3 solder mask with solder. The solder pot is used to apply solder to the patterns on O
Electronics Forum | Sun Nov 21 21:40:13 EST 2004 | John
I'm experiencing an impedance breakdown on an 0805 ceramic cap. In the application, the cap is at a 16V bias at all times. The unit failed in an extremely high humidity condition. We are using a NC flux and have determined there was flux underneat
Electronics Forum | Wed Jul 16 10:31:29 EDT 2008 | vms
I would recommend a mpm, some one else would say a dek and some one else would come up with some thing else. Both dek and mpm printers will take the 29x29 stencils. And you have more money than you need for one of them. Shop around and then go and
Electronics Forum | Thu Aug 13 15:16:16 EDT 2009 | davef
BoardHouse: You mean that our 'Martin Gershenson' might be this guy? Martin Gershenson; Christopher Associates Inc.,3617 W. MacArthur Blvd.Santa Ana, CA 92704; 714–979-7500 martin.gershenson@christopherweb.com So, you're implying that unlike some
Electronics Forum | Wed Sep 15 12:22:51 EDT 2010 | remullis
Mike, Another thing to consider is the type of switching they may use. Older Asymtek masking machines used transitors to communicate upline and downline instead of dry contacts. The problem we had with this is dropping enough voltage across them to
Electronics Forum | Wed Nov 17 05:20:38 EST 2010 | jlawson
Also please contact Rehm Thermal, they make best Vapor Phase systems in terms of cost of onwership - less galden usage than Asscon or IBL, have more controllable ramp rate control vs the other vendors also...use patented galden injection on demand an
Electronics Forum | Thu Sep 01 06:41:43 EDT 2011 | kahrpr
We run lead free and leaded on all of our lines. When lead free first came out we went to the extremes to make sure not one atom of lead would get into the process. I remember we were told that the world would end if leaded products were within a hal
