Electronics Forum | Tue Jan 15 15:42:15 EST 2008 | ck_the_flip
Patrick, you're right. I've only dealt with 2 different flavors of Alpha alcohol-based flux. I've always thought that the convection causes the activator to evaporate more rapidly, but this is probably just the case with older formulations. Again,
Electronics Forum | Sun Jan 13 19:44:02 EST 2008 | grantp
Hi, We need to solder a USB plug onto a PCB in our SMT machines, and this is the same type of plug you see on USB storage devices. It's a very flat connector with 4 SMT pins, however the hard part is the bottom of the connectors is the same level
Electronics Forum | Mon Jan 21 19:10:29 EST 2008 | hegemon
The APE machines are still OK in their place. We still have two APE machines that are over 8 years old and still are good for some processes, but have been consigned to the leaded solder rework area. We have upgraded to AirVac since the advent of le
Electronics Forum | Wed Jan 30 15:47:13 EST 2008 | tonyamenson
Just my humble opinion. Every place I've worked at uses x-ray over optical inspection for BGAs. Companies that had both often let the optical inspector collect dust becuase you can only really inspect the perimeter solder balls. Not to mention you c
Electronics Forum | Sun Feb 10 20:27:50 EST 2008 | jmelson
As long as it doesn't have a thermal pad soldered under the package, it shouldn't be a big problem. Small, pointed iron, stereo zoom microscope if you can find one, or a head-mounted magnifier. Lots of light. Rest the heel of your hand on the boar
Electronics Forum | Tue Feb 12 17:57:42 EST 2008 | chef
I must ask the silly question- are you sure you deposited the correct amount of paste? Depending on aperature design-the voiding could come from a stencil that has its holes partially built up with old paste. If paste volume is guaranteed, then what
Electronics Forum | Fri Feb 15 08:44:42 EST 2008 | mmjm_1099
FYI, Here are the steps in which we take to get approval. The stencil gerber layer needs final approval through our Engineering dept. What they do is send in a gerber layer from the stencil house and lays it over the current solder paste layer and ve
Electronics Forum | Tue Feb 19 09:41:26 EST 2008 | slthomas
ECD sells the MOLE, and they sell both the Oven Rider and the Wave Rider to accompany it. The thing is, you can profile both an oven and a wave machine without either if you're willing to just solder your thermocouples to a board. The nice thing ab
Electronics Forum | Thu Mar 13 16:32:25 EDT 2008 | dyoungquist
MyData PNP machines are good for high mix/low volume because change over time between jobs is lower than with many other PNP machines. They also handle parts on cut tape strips easily and you will have these with low volume runs. As for lead free o
Electronics Forum | Thu Mar 13 15:17:03 EDT 2008 | slthomas
about WHY violating IPC design standards gives you grief? Do they even know they exist? We've got one in particular that seems to shoot from the hip. I want to tell them the "why" as well as the "what" so they'll be a little more proactive. My fee
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