Electronics Forum | Fri Sep 10 12:34:40 EDT 2004 | kbayram
Thanks again for your insights. I'm just learning the details of these machines so you'ill have to bear with me. The descision will be made in around 6 months so I thought I would start my research sooner rather than later. I did get the impression
Electronics Forum | Tue Sep 21 11:39:41 EDT 2004 | pabloquintana
Conformal coat a bare board to determine if there > is there is enough surface free energy from your > solder mask to prevent dewetting. Sorry for my ignorance, but what is "enough surface free energy"? How do I determine that? >* Bake a board
Electronics Forum | Tue Oct 05 06:50:44 EDT 2004 | cabjerk
Hi All: Thanks for the feedback. I've did a lot of surfing for more info and found there are pro's and con's to each side. One side with the customer P/N your customer service doesn't have to worry if the others bump their builds ahead of your an
Electronics Forum | Fri Oct 29 04:07:27 EDT 2004 | Nick.W (TWN)
Hi, > > Has anyone had any experience with lead > free Sn-8Zn-3Bi solder paste? Apparently in Japan > it's becoming popular because it's got a melting > point of below +200C. > > Can anyone confirm that, > or does anyone have experience with >
Electronics Forum | Tue Oct 26 08:41:56 EDT 2004 | Bob R.
When we first got into BGAs on ENIG we were getting joint cracking at in-circuit test. The joints were breaking in the Sn-Ni intermetallic. We did a lot of pull testing while working with our board suppliers and our conclusion was that pull testing
Electronics Forum | Tue Oct 26 10:49:00 EDT 2004 | Simon UK
Hi, > > I'm planning to get a new oven. I wanna > know the advantages and disadvantages of each > oven type over each other. I'm being told to go > for an 8 zone oven. > > thanks for your > help. > > regards, Depends really if you want a dua
Electronics Forum | Mon Nov 01 19:50:29 EST 2004 | davef
Q1: Will the ion chromatography be able to identify and quantify the contaminant? A1: Yes, it will identify and quantify the amount of contaminant. Obviously this is very useful in troubleshooting the source of the contaminant. [The only problem fo
Electronics Forum | Tue Nov 09 13:36:03 EST 2004 | russ
If I remember correctly since I cannot find my copy of IPC 600, I believe that the 20% reduction applies to "defects" and not the total etch process. By the way what is being used to measure down to .0005"? For this measurement to be correct it wou
Electronics Forum | Sat Dec 04 18:55:38 EST 2004 | Grant
Hi, Yes, all you really need to do is boil the fluid while suspending the PCB above the vapor, so it's quite easy. However I would recommend against dropping the board direct into the vapor cloud, as that would be a very fast warm up, while letting
Electronics Forum | Fri Nov 12 15:56:50 EST 2004 | pdeuel
Thanks, That's the direction i'm headed. After by passing relay altogeather, testing large caps for the driver supply, replacing bridge rectifiers, and the MOV's, that's about all im left with. The vacuum motor will run with the software toggle witho
