Electronics Forum | Mon Nov 21 13:54:19 EST 2005 | JF
Many companies don't think of the importance of the maintenance in the machines. I proved to my Boss that following the proper maintenance we were able to get more out of the machines, he did not do maintenance for 2 years till I came to this place a
Electronics Forum | Sun Nov 20 01:27:21 EST 2005 | C. Kolokoy
Try an experiment where you profile the assembly with 3 consecutive boards in the oven spaced just 1" apart versus just 6" apart and then 12" apart. You figure most ovens have about 12 - 16" heating zones, so for your typical 8"x8" PCB, you'd have w
Electronics Forum | Tue Nov 22 10:12:13 EST 2005 | stepheniii
Have you complained yet to MuRata? You are talking about the same bluetooth module, aren't you. I hope everybody having trouble with module complains to them. I don't believe they put all the cautions and warnings about reducing the deltaT on the da
Electronics Forum | Fri Nov 25 09:31:56 EST 2005 | davef
pyramus, First, search the fine SMTnet Archives for previous discussions on BGA shorts. Second, we're still not clear on the issue. * Is the problem with a BGA? If so, please describe the BGA, including any heat spreader * Is the problem with a uB
Electronics Forum | Mon Nov 21 01:10:27 EST 2005 | mskler
We are facing the problem of dry soldering in chip capacitor 0603. When we told the Vender then he just told that we are using solder paste with 62/36/2 combination & the components are lead free so there is prob. of dry soldering. While we are usin
Electronics Forum | Tue Nov 29 12:16:29 EST 2005 | Inds
MKS, You do not need to reach a temp of 245C to form a joint and surely not for 0603s. Since you are using such a high temp your flux is getting dried out.. Also if you are going to reach a peak of 245C on a brd that has Sn/Pb compt and Pb-free.. yo
Electronics Forum | Wed Nov 23 07:08:31 EST 2005 | Al
Hi, I'm working as a process engineeer at a PCB manufacturing plant. I'm a part-time degree stundent, and for my final year project I have to evaluate and implement a selective soldering process. In order to do this, I need to find some good books
Electronics Forum | Wed Nov 23 17:24:43 EST 2005 | adlsmt
With Jars you tend to mix used paste back in with new paste and there is also a lot of air in the jar. If you are high mix try using cartridges and putting the used paste in little ziplock baggies. You can rip the baggies open including tearing the s
Electronics Forum | Thu Nov 24 02:09:52 EST 2005 | grantp
Hi, There is a reason why the Fuji's have a price premium, as they work perfectly, all the time. I cannot believe how much better the Fuji machines are once we upgraded from MYDATA, and it was worth every cent. If your main job is to put down comp
Electronics Forum | Thu Nov 24 20:42:32 EST 2005 | adlsmt
I agree with Grant, I posted a reply to your other thread as well so wont go into detail on machines but if quality matters, go with a tier one supplier. Even Fuji is dropping thier prices. We picked Universal, I cant believe the difference in pick r
