Electronics Forum | Thu Dec 18 13:05:59 EST 2008 | tsvetan
we have omron, before buy I have evaluated lot of other machines, what I like most is the three ring at different angle lighting which allows pseudo 3-d solder joint evaluation and historgams with statistics, you can see out of total solder joints ho
Electronics Forum | Fri Jan 02 16:52:16 EST 2009 | boardhouse
Hi, From a Manufactures choice - Green is the best due to it is the most commonly used mask color in the industry & cheapest. Kind a like Red paint for Barns. For US shops, most only have one LPI machine and to continually switch from Green to othe
Electronics Forum | Tue Jan 13 12:54:11 EST 2009 | boardhouse
Emil, Part of the problem it sounded like is that the color was not clearly defined as light or dark in Matte or gloss. Your example of car paint would have the same issue if you just ask them to paint your car green. What color of green would y
Electronics Forum | Mon Jan 12 12:43:34 EST 2009 | smt_guy
With the High Volume Manufacturing in United States became lesser and the current crisis that the country is dwelling in, Low to Medium Volume - High Mix Manufacturing is very common and small EMS Providers are scrambling to get a Pie of the Job. I
Electronics Forum | Mon Jan 19 12:56:36 EST 2009 | alien
Proper Prior Preparation Prevents Piss Poor Performance. I am on the customer side, but have a pretty good idea on what has to happen on the assembly side. TALK TO YOUR CUSTOMER, TELL HIM IN ADVANCE WHAT YOU NEED !!! PCB fab takes at least one day
Electronics Forum | Mon Jan 19 14:00:34 EST 2009 | jwolvans
Thank you for the customer's perspective, Alien. We actually send a short "wish-list" to our customers and includes such necessities as: 1. BOM. Must be Rev-controlled and contain, at minimum, a useable part numbering scheme, adequate description fi
Electronics Forum | Mon Jan 26 13:13:07 EST 2009 | rgduval
We've had this same problem with the solder wicking to the component terminations. However, in our case, we did not see the pads turning a silver-white color...rather, they exhibited a tarnishing/darkening of the gold. We determined that we had som
Electronics Forum | Tue Feb 17 06:32:32 EST 2009 | sachu_70
Hi Carlton, I'm sure you are a good person who wishes to explore something new, each time. Your attitude is absolutely human, but is not always appreciated by the professional world. I read your resume and would like to advise the following: 1. Since
Electronics Forum | Sat Mar 21 09:09:40 EDT 2009 | davef
Your puzzlement about blowholes in PTH solder connections during reflow soldering comes from: * Boards are hydroscopic. So, moisture content of the board is uniform. * Gold plating is uniform. * Nickle plating is uniform. * Copper plating on your PTH
Electronics Forum | Sun Apr 26 08:36:55 EDT 2009 | davef
First, in direct answer to your question, DOE printer setup variables (MPM): * Squeegee speed: 0.5 to 1.0 in/sec * Pressure (metal): 1lb/in of blade * Pressure (plastic): 1.6-3 lb/in Second, supprting earlier responses, most people monitor paste hei
