Electronics Forum | Fri Nov 20 09:07:43 EST 2009 | Sean
Hi all, Another thing that I would like to discuss here is that I used to come across few reports that mention about the flux residue has great impact on the PCBA impedance, especially when everything become smaller and smaller...I mean, when mother
Electronics Forum | Thu Dec 24 09:30:56 EST 2009 | fishingfool
Looking for an answer about file structure on CC. It has been 10 years since I have done anything with CC so bear with me. After you have created a job file that has all the components on it and the polarity parts have a pin 1 indicator, I need to
Electronics Forum | Fri Feb 26 17:16:24 EST 2010 | jlawson
If you have trouble also you can check out Valors vPlan, i have it running Yamaha YV100Xxg machines - they support Assembleon versions too. Can generate VIOS files from ALtium Input - either CAD DB files or ODB++ as Altium Designer supports this now.
Electronics Forum | Mon Jan 11 09:15:36 EST 2010 | lynn_norman
In a former job we had issues with leakage currents on a QFP. The component was acting as a thermal shield leaving a lot of flux residue behind. To make it worse, the flux solvent wasn't totally evaporated, so we had ionic residue, a fluid media, a
Electronics Forum | Wed Mar 24 11:25:47 EDT 2010 | rajeshwara
I recommanded AOI inspection as I am a AOI programmer too. 1.Yes u have to write programm for every PCB design,but u maintain the standard library. 2.If u have standard library and SMT machine CAD file ,then it doesnt take more than 30 mins. 3.No I
Electronics Forum | Fri May 07 05:26:07 EDT 2010 | jlawson
Best have a chat to Rehm from their perspective. But galden does cost money. All depends on your production. Basically the more you run the machine, depending on design of machine, the more galden it uses... Open fixed mass galden type machines try
Electronics Forum | Sat May 29 02:26:14 EDT 2010 | vinitverma
If you want to vary the voltage to control the motor speed, then this is not the correct way. Though you can use LM317 for reducing the votage (using a 5K potentiometer) which will sure reduce the speed but it'll reduce the torque tremendously. For D
Electronics Forum | Thu May 20 16:22:07 EDT 2010 | remullis
I just got word from my board designer that the actual pad size is 11.8 mil and he is reducing the paste layer to 7.8 mil. To me this is way to much of a reduction. I am was accustomed to doing 20% reduction on any thing 20mil pitch or less. The scre
Electronics Forum | Fri Jun 11 03:14:03 EDT 2010 | muarty
Thanks Dax, We currently employ a stencil aperture design pretty much similar to that you describe. And you are correct in what you say about the thermal demands almost dictating the allowable voiding level. We have suggested to our customer that th
Electronics Forum | Mon Aug 23 14:09:56 EDT 2010 | davef
Similar to Coop's comments, above ... Bridging: * Mis-placement: misplaced components, high placement force mushrooms paste * Too much paste: HASL thickness, lead finish, poor underside support, poor underside wipe frequency, printing with too lar
