Electronics Forum | Thu Mar 03 16:33:24 EST 2005 | pjc
Revision D has over 730 new and updated illustrations of acceptability criteria and has been critically reviewed for clarity and accuracy. The document synchronizes to the requirements expressed in other industry consensus documents and is used with
Electronics Forum | Thu Mar 03 12:55:31 EST 2005 | dru_wells
We seek the following. Any referrals would be appreciated. Responsible for the complete development of unique feeders that present custom metal stampings and connector products for pickup by industry standard placement machines. The parts will be i
Electronics Forum | Fri Mar 04 11:00:37 EST 2005 | mrduckmann2000
Anybody have any ideas on the proper way to screen solder mask onto a PCB? I am going to cover SMT parts that were soldered to the btm side of the PCB, now I have to mask them in order to run this animal through the wave solder process. I know it w
Electronics Forum | Sun Mar 06 20:12:53 EST 2005 | mrduckmann2000
Russ, I didn't use a stencil for my experiment because I was not sure that the solder mask idea would work. Now that I have treid a few experiments I feel dangerous! LOL. I will not have to use a step stencil, I will just mask all the parts. Lik
Electronics Forum | Sat Mar 05 22:32:58 EST 2005 | gpaelmo
Yes we've had problems with kemet caps on 12mm t/r. By the time it gets replaced, our production schedule gets so screwed up. Our immediate solution was to bypass and place them by hand before reflow. We eventually went with a cross from Venkel and i
Electronics Forum | Mon Mar 07 09:44:49 EST 2005 | anonomous
The machine sees a magazine, but with wrong number. somehow one (maybe more) wire from the magazine bus does not reach slot 3, as the other slots work, there is probably not a short, as the magazine bus work for other slots, the problem is probably i
Electronics Forum | Mon Mar 07 11:19:13 EST 2005 | cyber_wolf
Another thing : Make sure that there are no other mags plugged into the machine while you are trying to trouble shoot slot 3. I have seen shorted vibratory ID chips mess up other magazines up in different slots. For instance : a shorted vibe in slo
Electronics Forum | Mon Mar 07 20:27:07 EST 2005 | KEN
Oh silver and its...improved solderability over tin / copper. BS if you ask me. Look to your flux and thermal profile for wetting spread. Ask yourself just how much "wetting spread" do you need to fill a barrel? I have the same 100% barrel fill
Electronics Forum | Wed Apr 20 18:13:32 EDT 2005 | greg york
With twenty five machines working with the LFB227/S on our little island it does seem to work well. Wetting is good compared to Tin/Copper and flow is comparable to 63/37. Biggest problem sticking 3 - 4 % Ag in a solder ignoring the patents and royal
Electronics Forum | Mon Mar 07 21:37:42 EST 2005 | ABHI
It depends on your product requirements. I have seen aluminium wire bonding operations in as high as class 100K clean rooms. These are the assembly areas for calculators. The best is class 10K clean room for wire bonding. You can go upto fine pitch w