Electronics Forum | Fri Jan 07 01:05:40 EST 2000 | Dennis O'Donnell
I suggest you check out as many vendor at first as possible. Price varies greatly depending on your requirements. Once you find a company that has a price range that you are comfortable with, most can provide you with their formula so that you can
Electronics Forum | Wed Jan 05 16:46:44 EST 2000 | Dennis O'Donnell
Several methods work well. 1. (Low Volume Method) Using an Xacto blade, scrape off the solder mask holding the blade flush being careful not to use the pointed part of the blade. 2. (High Volume Method)Tape off the area that you don't want the mas
Electronics Forum | Wed Jan 05 11:01:37 EST 2000 | Ron Lahat
I have in design a 400mm x 400mm pcb 3.0 mm thick heavily populated with BGAs 50 mil pitch and want to run a double sided reflow process with overlapping BGAs (CS/PS) 1. can I avoid a selective jig for PS BGAs?(weight calculation ?) 2. Is it possibl
Electronics Forum | Tue Jan 11 11:14:09 EST 2000 | Wolfgang Busko
What a challenge! I think it all depends on the equipment used. Seems rereflow of BGA isn�t that good (see the advices for wavesoldering BGA populated boards). Although you might check for the tacking force by sending a sample BGA board head over thr
Electronics Forum | Wed Jan 05 10:50:29 EST 2000 | Phil B
Hi Greg, I have the same problem over here in Belgium. I have been looking to rent an X-ray but for the moment I only found Glenbrook as a possible source. So I would be very interested if you find any alternative. Furthermore I am also interested i
Electronics Forum | Wed Jan 05 11:43:11 EST 2000 | Dave F
Yins, In low volume applications, using X-ray for BGA mounting process control is: 1 Very expensive approach, as you've stated. 2 Requires beaucoup operator training and interpretation of results. Which is double bad, because of the intermittent n
Electronics Forum | Wed Jan 05 16:36:54 EST 2000 | Dennis O'Donnell
We've recently purchased a Nicolet Imaging System. There are several brands on the market and some alternatives. From our research we found that you basically get what you pay for. I would plan on spending from 30k to 60k for a good quality system
Electronics Forum | Tue Jan 04 15:38:19 EST 2000 | Pat Pepper
Hi everyone: Our company is trying out immersion white tin for fine pitch assembly with what I would call mixed results. Reflow solder looks very good, but wave solder looks somewhat grainy (this may not be a problem in actuality). We had dewettin
Electronics Forum | Tue Jan 11 10:01:30 EST 2000 | Wolfgang Busko
Hi Pat, we had white tin boards laying around for about 10 month with no extra protection than the plastic bag that they were shipped in. Never thought of using them for there was a relayout planned to fix some serious bugs. But that�s life, relayo
Electronics Forum | Fri Jan 14 08:05:23 EST 2000 | Pat Pepper
Hi Dave, Thank you for the response. In answer to your responses I'll use the original numbers of my questions. 1. We would like to turn around our boards fast, but sometimes due to the market conditions we wind up with inventory. After reading
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