Electronics Forum | Wed Dec 02 14:54:52 EST 2009 | jdumont
Hi all, just wondering what type of brushes you all are using to manually touch up/apply your conformal coatings? We use an solvent based acrylic and do minor touch ups as they are processed. Occasionally we will have a bristle or two come off the
Electronics Forum | Thu Dec 03 07:37:44 EST 2009 | duso02
The quality of the brush is most important. We use artist brushes from Torrington Brush Works. Sable works best but are the most expensive. We use more camel hair. They work best for us as we "hand coat" hundreds of boards a week and go through many
Electronics Forum | Thu Feb 25 20:25:16 EST 2010 | dean
Good question, the answer as of right now is yes. Our machine is only able to go down to 0402 parts before the surface tension of the solder begins to cause issues with maintaining the placement position of the part on the nozzle. However, we are dev
Electronics Forum | Fri Apr 09 09:08:40 EDT 2010 | cast2010
Hello, I produce two types of board. - 100% Thru Hole - 50% thru hole and 50% SMT For the second, I have a bad wetting after the reflow on the top. The pcb board have Au-Ni pad. I use a water soluble paste. I clean the board with a solution with
Electronics Forum | Wed May 12 11:55:08 EDT 2010 | pbarton
We are using VPS, but only for high mass assemblies. As the other respondent has suggested if the mass of the assemblies is very low then difficult to control temp. rise times to within the normally accepted parameters. The Rehm equipment does seem
Electronics Forum | Tue Jul 06 12:25:54 EDT 2010 | isd_jwendell
I agree, setting a standard for the pcb fab shop is good. I use a fiducial a little smaller than the spec you mentioned, I use 30 instead of 40 mil, which is the minimum recommended for my machine. The rest of the spec (SMEMA Standard 3.1) appears th
Electronics Forum | Mon Aug 16 14:43:44 EDT 2010 | dan_ems
Hello, i don't know if is possible to dispense paste but for reduction of cost we use a diferent type of stencils, from aluminium of 0,2 mm, purchased from a typography of newspapers. Ofcourse the pcb for what we use this stencil are simple. But th
Electronics Forum | Tue Sep 14 17:49:36 EDT 2010 | g2garyg2
The problem with the Sunsda units is that they use a special circuit board, not PLC and Chinese software for programming, so getting into the program to find out what is going on is a problem. Have you replaced the SMEMA cable? I have seen bad ones.
Electronics Forum | Thu Oct 21 23:35:45 EDT 2010 | iwan
Dear WRS consideration for buying SMT equipment is likely you buy a vehicle, you must consider many things, after sales services, machine easy to do model change, accuracy,cheap, mostly machine use in your region. etc. I also run production for LCD
Electronics Forum | Wed Oct 13 09:37:19 EDT 2010 | deborahgalek
If anyone else has version 7 of CircuitCam, I am currently using this software and have had many issues with text boxes and pictures moving significantly when zooming in and out. I have been given the following solutions: Use embed word or excel d
