Electronics Forum | Tue Feb 12 05:47:29 EST 2002 | Roy Barton
To Dave F. Thanks for your comments. I should point out that I am not well versed in SMT, I am more of a thick film and chip man. However I will look into your leads. I will try and find out more about the Quad equipment. I am very wary in getting
Electronics Forum | Mon Feb 11 20:07:46 EST 2002 | caldon
Stephano- There is a Chemical process to revert the contamination back to its original form. The EMPF Developed it back a few years ago in conjunction with Rockwell and some others. Please contact ACI at 610-362-1200 and ask for Dr. Greg Parks. This
Electronics Forum | Thu Feb 14 09:07:43 EST 2002 | PeteC
Looking at low cost reliable Mother-Daughter board interfaces. Looking at having the Mom w/ a routed out slot, like 1.7mm wide with solder lands on the bottom side then plugging in Daughter thru Mom's slot w/ the Daughter having board edge contacts t
Electronics Forum | Fri Feb 15 14:19:15 EST 2002 | seand
Hello Dave, With regards to acquiring data and additional insight to cost of ownership and your technical concerns for closed loop recirculation, a good contact for you may be Brian Mahue of Resys. Resys specializes in closed loop recirculation sys
Electronics Forum | Fri Feb 15 00:39:09 EST 2002 | Jones
I've noticed that after we have switched to Transition Automation blades on our MPM screen printers that the stencils seem to be wearing out faster and I see a wavy rippling effect across the length of the stencil thats impacted by the squeege blade.
Electronics Forum | Fri Feb 15 08:13:18 EST 2002 | Dave G
What Snap-Off are you running ? I've seen this happen when a large negative Snap-Off is used. If you "contact" print (I.E. Zero Snap-Off) this tends to minimize the stencil coining. We use a mix of MPM & Transition Automation blades. I have noticed
Electronics Forum | Thu Feb 21 21:50:38 EST 2002 | dougk
Silly question, but, are TR blades 'exactly' the same size as MPM's and seat themselves in the holders just like MPM's? Also, different types of steel are harder (less flexable) than others. Are TR's the same? If harder (due to steel strength or coat
Electronics Forum | Fri Feb 22 00:25:46 EST 2002 | Jones
There appears to be less of a blade sticking out of the holder than the MPM set up. Thats something we noticed recently. We have our mechanical attack angle set at 0 degrees right now, but we are in the process of changing this setting by 5 degrees t
Electronics Forum | Fri Feb 15 08:33:59 EST 2002 | fmonette
The joint IPC/JEDEC standard currently specifies a limit of one bake cycle, regardless of the temprature or duration. In the proposed revision this will be replaced by a maximum cumulative duration of 48 hours at 125C. The reason identified for thi
Electronics Forum | Fri Feb 22 11:49:42 EST 2002 | stimpman
Hi, Have you checked your placements pre-reflow? The most typical cause of a billboard unlike tombstoning is a pick and place issue. Billboarding will usually happen with ( profile/bad pad layout and the most common just poor center placement. I'v
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