Electronics Forum | Wed Dec 05 11:04:06 EST 2012 | emeto
AIM can give a good result, I tried the solder > paste from many manufacturer - AIM, Kester, > Indium, Koki, Alpha Metals, Heraeus - but I > stopped my choice at Kester. For example, right > now I have EM907 with date of manufacture in > februar
Electronics Forum | Wed Dec 05 18:20:14 EST 2012 | davef
Your SMT5000 can place 25 thou components. I'd guess the TQFN-EP is 16 thou pitch. You get the picture. Before considering the purchase a capable machine, I'd add copper to the board to give my operators a break when they tweek the position of these
Electronics Forum | Sat Dec 15 06:34:54 EST 2012 | sowmya
Normally paste manufacturer specifies stencil life of a paste is 10 hours. the question is, if i run a continuous manufacturing for 40 hours, we will be adding 250 g of paste for every two hours. The addition of 250 g will be mixed with the paste whi
Electronics Forum | Wed Jan 09 18:08:23 EST 2013 | hegemon
Not exactly normal, I don't think. Though I have seen similar in the CM world. I can't think of a way to remove that overplating, either. If you can't reject the boards outright, then you might be looking at some touch up work, should bridging hap
Electronics Forum | Fri Jan 18 21:13:51 EST 2013 | ngineer
I was trying to set up a new board, and after creating the board directory, the CC spit back a line of garbage and said the directory was invalid. I pressed escape to start over, and it froze. Now when i start it every time, it goes through login a
Electronics Forum | Wed Jan 30 17:23:07 EST 2013 | dyoungquist
In response to hegemon... This is not a recommended practice but..... We have added a few drops of water soluble flux to our water soluble solder paste when the paste is on the stencil. This was after the paste had "dried" out a bit. We have had
Electronics Forum | Fri Jan 25 12:14:18 EST 2013 | johng
I'm using urethane conformal coat and have fisheyes and dewetting after coating even though the PWAs have been through the wash cycle twice. I'm looking at using Ionox 13302 in an ultrasonic cleaner as a short term solution until root cause can be id
Electronics Forum | Fri Jan 25 12:15:04 EST 2013 | johng
I'm using urethane conformal coat and have fisheyes and dewetting after coating even though the PWAs have been through the wash cycle twice. I'm looking at using Ionox 13302 in an ultrasonic cleaner as a short term solution until root cause can be id
Electronics Forum | Fri Jan 25 14:20:31 EST 2013 | jorge_quijano
Hi there, I have a new product today, after reflow oven I've seen a black stain coming from various holes, they can be cleaned with a tissue but some of the contaminant remains inside, we are using Sn63Pb37, the stains are far from soldering areas, t
Electronics Forum | Mon Feb 11 09:49:43 EST 2013 | marcelorotofrance
Well, i can divide the inaccuracy in two phenomenons: Poor repeatability, i.e. the pockets don't stop at the same position after every shot by a margin of up to 0,5mm (20mils). The second problem is the stop pocket position, which is not equal from o
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