Electronics Forum | Sat Oct 04 00:21:00 EDT 2003 | Dean
It would help to run a carbon, anion, cation, mixed-bed configuration with pure DI as the final rinse. IF your incomming water is really bad you can run a RO unit to "prepare" the water for ion exchange. Do you run omega meter or ionograph testing
Electronics Forum | Mon Oct 20 11:48:34 EDT 2003 | blnorman
Who said there was NO evaluation? The paste we chose was evaluated based on a 20 point test score as well as material compatibility. Once we introduced it to manufacturing each line had problems. For one manufacturing treated it as a drop in repla
Electronics Forum | Wed Oct 15 08:55:59 EDT 2003 | John
I'm looking at an application that would require 62/36/2 solder paste. We currently run 63/37. I'd like to change across the board to prevent a mix up, but I don't know what concerns/issues that might create. The PCB's we currently run are HASL fi
Electronics Forum | Thu Oct 23 06:58:38 EDT 2003 | chrissieneale
Help! We currently use out SMT for pretty much one-off's. we use BGA's and complex board designs and it looks good to say it's been SMT'd. We are now looking to take on a project (a one off project) that would move our production up from 1 to about 2
Electronics Forum | Sun Feb 15 17:12:15 EST 2004 | brian bennett
as george says move beam back towards the centre of the machine make sure it is square although not neccesarily on the alignment arrows. make sure alignment laser is clean along with the recieving mirror on the head.also make sure the driver filters
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 | Mon Nov 17 21:30:10 EST 2003 | davef
Odds are that all of the completed product had corroded leads, if the components came from the same load / were processed similarly. ... but the issue is NOT corroded leads. The issue is well soldered connections. * If the solder connections on the
Electronics Forum | Thu Nov 20 12:10:20 EST 2003 | frank
Well, let me take a shot... +/-100um = 0.1mm 5 sigma = is the number of acceptable defects (or placements outside of that accuracy (or tolerance). I believe 5 sigma is 233 defects out of 1 million, but I could be wrong on that. So basically all pl
Electronics Forum | Wed Nov 26 10:46:45 EST 2003 | caldon
For a general rough rule of thumb I use Practical Components for programming our machines. Practical has a nice layout of most Tape and Reel components and sizes. We use this mostly for tape/ feeder allocation. But for QC, Specs, and Other Stuff we
Electronics Forum | Tue Dec 16 23:57:58 EST 2003 | Grant Petty
Hi, Thanks for the feedback, and this has been helpful. Still not sure what we are going to get yet though. We are based in Australia, so it's also dependent on local support. This can be a problem, because when everything is going ok, all the sal
