Electronics Forum | Thu Sep 12 18:50:17 EDT 2002 | scottefiske
Sorry so late in getting into this tehcnical issue. I have seen this condition before...90% of the time in conditions of adhesion on a water soluble material... is the paste...exposure time, lot issue, etc..basically the paste's carriers and binders
Electronics Forum | Tue Sep 10 19:08:59 EDT 2002 | cp743
Brian, I believe that someone has given you incorrect info. Both of these vision types ignore protruding nozzles during vision processing. I am currently running 1608 components with a 1.0mm nozzle on a CP-643E series machine utilizing vision type
Electronics Forum | Fri Sep 20 05:17:10 EDT 2002 | byates
What are the error codes?? you dont even know if it is the vision type until you have checked this out. It could be camera lighting. Do you know how to use vision trace on your machine? What is your x&y tolerance? What about vision 254 or 255 have yo
Electronics Forum | Fri Sep 06 11:16:08 EDT 2002 | dason_c
To check any solder crack, open under the BGA/CCGA. I am using a destruction test to find out is it related to the reflow profile or the Fab issue. 1. Depense the Dye (I use Dykem Steel Red) under the device. 2. Cure the dye 3. Remove the device 4.
Electronics Forum | Thu Aug 29 17:45:54 EDT 2002 | nifhail
What are other testing/process step that we should do if we where to use the old date code QFPs other than solderability and baking ? What is the plating composition normally %? lead, % tin etc. I have my policy not to accept the more than 12 mont
Electronics Forum | Thu Aug 29 20:02:58 EDT 2002 | davef
Often assemblers leave areas unsoldered for future component additions, modifications, and test points. On imm silver boards, these unsoldered areas become a real bear to solder/test later in life. One way to avoid that problem is deposit some solder
Electronics Forum | Fri Aug 30 04:44:31 EDT 2002 | jason
Hi Dave, Why does it become " a bear" if u leave it unsoldered ?? Does it oxidise or something ?? Question (1): Does Ag imm. PCB need to use Solder paste with AG ?? If yes, why. Question (2): Does Ag imm pcb have poorer surface finishes than HAS
Electronics Forum | Fri Aug 30 13:12:00 EDT 2002 | Mark Ross
Can anyone recommended any good books and/or articles relating SPECIFICALLY to stencil design for high speed production whereby adhesives will be stencil printed onto a PWB? The IPC document covering stencil design is not specifica at all. I know t
Electronics Forum | Tue Sep 03 12:09:36 EDT 2002 | cyber_wolf
I have a problem with the shutter cables fraying and eventually breaking on our CP43 machines. I am only getting about two or three months out of them. I think that I might not be adjusting them properly when I install them....??? Does anyone know t
Electronics Forum | Tue Sep 03 14:22:25 EDT 2002 | dragonslayr
It's the latest rage at the California State Fair. A double dose of sugar rush and cholesterol. Get 'em fresh outta the fryer, ummmmmm goood!!!!! for those of you wanting to do a home version - be sure that your fryer grease is at least 375 F, and
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