Electronics Forum | Mon Jul 23 22:14:36 EDT 2007 | fastek
Sorry guy.........just trying to state the obvious is all. Not an accountant....just an old equipment guy around since the days when thru-hole equipment ruled the earth. But until you get some proper training, no amount of staying late and working
Electronics Forum | Fri Aug 03 12:31:43 EDT 2007 | jdengler
You probably do not have "Drift". The rotary table and or fixture may not be square. The rotary table can be adjusted. You should have someone who has done this before available to make the adjustment before you try it yourself. You can check the
Electronics Forum | Mon Aug 06 10:03:01 EDT 2007 | slthomas
I agree with jdengler on the rotary table being skewed. You need a couple of dowel pins (1 1/2" long x 1/4" dia., I think) to align that disk. Each idler is held on an eccentric cam and can be adjusted to square up the rotary table by dropping the do
Electronics Forum | Mon Jul 23 17:49:04 EDT 2007 | davef
We know nothing of DeFelsko, but do understand how they distinguish between the solder mask and the conformal coat. DeFelsko manufactures hand-held, non-destructive coating thickness gages that are ideal for measuring the dry film thickness of confo
Electronics Forum | Tue Jul 24 10:57:12 EDT 2007 | babe7362000
Is there a reason why you want to wash the board > before wave?!?!? > > What is your process > flow? > > I run bottom side of my boards first, > then top just to make it easier to setup (easier > to put those support pins around those smaller
Electronics Forum | Wed Jul 25 10:57:08 EDT 2007 | cecil
Our board layout folks are currently designing a PWB using a 132 QFN. The component is .5mm pitch with .35mm square pads. The component manufacturer recommends the following footprint: .4mm square land .3mm square solder resist 1.why do they spec
Electronics Forum | Thu Aug 16 09:42:15 EDT 2007 | russ
This could be the reason for the mask defined pad. ERROR in docs! This happens a lot. I believe this to be case honestly, I would not use mask defined pads for these. If you get a registration shift in mask which is likely you will run into troub
Electronics Forum | Wed Jul 25 11:16:34 EDT 2007 | lloyd
Hi Folks, I hope someone can help me, Is the homeplate stencil design (for reduced solder paste) the same for preventing solder balls as it is for reducing tombstones? i.e. the reduction of solder paste under the component termination. I'm trying to
Electronics Forum | Wed Jul 25 11:55:21 EDT 2007 | ck_the_flip
Zoinks!! Doing the homeplate design on 0402 will actually make your tombstones WORSE! Think about it. Your wetting forces are now on the ENDS of the device with no solder paste toward the middle of the device to tack the part down - a gauranteed f
Electronics Forum | Thu Jul 26 10:28:38 EDT 2007 | realchunks
Sounds like our old friend Moonman. He used to rant on this forum about a year ago. He claimed to find a new metal that was never discovered before. One can only assume it is the same old made up stuff he blathered on about here. I like how they
