Electronics Forum | Wed Sep 10 12:20:52 EDT 2008 | grics
True words of wisdom. Production managers need product out the door, not tied up in wip waiting on an analysis to go and fight a vendor for errors in their manufacturing. Especially if you are a Low Vol High Mix facility. Quite frankly, the resourc
Electronics Forum | Wed Sep 10 12:56:26 EDT 2008 | vladig
No arguments there. I 100% agree that quality engineers can and do solve a lot of problems on the spot. I've nevern said "run an analysis as soon as you get a problem". The whole nine yard started with a solderability problem. In my previous product
Electronics Forum | Mon Sep 08 11:53:15 EDT 2008 | aqueous
Here are links to articles on that subject: Can You Clean a No-Clean Assembly? http://www.residues.com/pdfs/Circuits%20Assembly%20Articles/2003/low%20res/2003.01-Can%20You%20Clean%20a%20No-Clean%20Assembly%20-%20Circuits%20Assembly.pdf Component
Electronics Forum | Mon Sep 08 14:29:04 EDT 2008 | davef
�Another direct measurement to determine resistivity values (i.e. of remaining no-clean residues) can be performed through impedance spectroscopy. The surface resistance underneath chip resistors and capacitors can be determined to show the improveme
Electronics Forum | Wed Sep 10 08:16:23 EDT 2008 | ck_the_flip
I guess sarcasm and quick wit flies over some peoples' heads. 8 years ago (wow, that's an old post), I was poking fun at the guy, and wanted to illustrate how ridiculous it was that he spat upon our printed circuit board assemblies to simulate moist
Electronics Forum | Thu Sep 11 20:32:08 EDT 2008 | diesel_1t
I know that most of the problems are called solder issues, this is why i put "solder related" quoted because i have seen more than usual "solderability issues" posted on this forum lately. I had a tombstoning issues with 0603 resistors, on some mat
Electronics Forum | Thu Sep 11 18:44:31 EDT 2008 | smt_guy
We have an Ionic Contamination Testing system but short of having a monitoring record for the chemical concentration. What we have is a monthly maintenance check of the concentration and annual check and calibration of the chemicals. We seldom use th
Electronics Forum | Thu Sep 11 19:19:07 EDT 2008 | Mike Konrad
Most ionic contamination testers prompt the operator for the current concentration at the start of each cycle. The normal concentration is 25% DI Water and 75% IPA. Although most machines ask for the current concentration, concentration adjustments
Electronics Forum | Wed Sep 17 12:06:58 EDT 2008 | wrongway
Don't forget repairing the boards all the special tips for the small parts sounds like you might be placing BGA may need a special machine just for reparing that. some places think they need x-ray for inspecting BGA. type of paste that you going to
Electronics Forum | Wed Sep 17 12:51:04 EDT 2008 | stepheniii
We got over 500,000 placements per month with two Mydatas for three consecutive months. And I want to say organized Fuji changeovers beat disorganized mydata changeovers. Even though Daxman is right that they can take a little longer to set up. In o
