Electronics Forum | Fri Apr 29 17:49:26 EDT 2005 | Woodsmt
I have used many of these devices recently and have used them several times over the last few years. I have been successful using a type 4 paste on a 5 mil stencil. The 13 mil round aperture should provide you with an area ratio just adequate for r
Electronics Forum | Fri Jun 23 09:36:58 EDT 2000 | C.K.
Chrys: Funny that you mention that, but here at my company, our oven is blamed on almost everything: skewing, tombstoning, solder shorts, etc.... In fact, we often have to tell the supervisors, "It's not the oven because we don't turn the skewing
Electronics Forum | Sun Feb 18 14:46:11 EST 2001 | CAL
Some key data is needed 1) how often does the HS 50 machines run? 24/7? 2)How many placements are being performed? I know for a fact Siemens Siplace S/F platforms require weekly preventative maintenance. Knowing the sophistication of the HS platform
Electronics Forum | Thu Sep 23 23:34:47 EDT 1999 | JAX
| Is there a standard rule/guide for the orientation of pcb's in a panel for panelised board (specially for routed panel). | i often get this question from peeps here and i kept telling them that it depends on how it affects the process. | thanks and
Electronics Forum | Tue Jan 13 13:17:00 EST 1998 | Matt Brown
| We use no clean paste and sometimes experience | flux splattering which gives spot on gold fingers. | Need help in analize the cause. thx. Most often, the 'splattering' is caused by an excessive temperature in the oven: this can cause the solder p
Electronics Forum | Tue Sep 24 12:58:27 EDT 2002 | dragonslayr
Although focusing on solderability may be the right answer, I wonder if you are satisfied that co-planarity is not the root cause. With random events of contact opens, this may be the case. Cleanliness of the stencil can also be a source of your pr
Electronics Forum | Wed Feb 11 11:53:42 EST 2004 | Maryann
Our company strictly does selective conformal coating applications for the customer. We will quite often see one side looks great, and the other side doesn't. We often see dewetting around holes, and have found this can be a possible flux build up. A
Electronics Forum | Thu Jan 04 10:27:47 EST 2007 | slthomas
1) determine the rate of cleaning frequency related defects your production can tolerate. 2) determine the frequency that nets you that defect rate, or lower, but also consider the cost of cleaning materials and throughput if you're cleaning very oft
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 Jul 31 09:48:15 EDT 2009 | dyoungquist
You can use cut tape on Mydata machines fairly easily. We are a high mix, low volume manufacturer who has to use cut tape often as that is what our EMS customers provide. It is does take more time to load/unload than a reel does so you need to fi
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