Electronics Forum | Sat Aug 07 22:16:16 EDT 1999 | Earl Moon
| | | Mike, | | | | | | Got your message and those of others concerning PCB fab supplier evaluation and qualification check lists, etc. I have a severe problem here in WI as I can hardly access the internet, and when I do it is cut off abruptly for
Electronics Forum | Thu Aug 05 04:32:21 EDT 1999 | Wolfgang Busko
| I am currently in the process of setting up an SMD Parts Package Database. The database will contain dimensional information to be used by the placement machinery to process parts (I.E Package Type, # of Leads, Lead dimensions, Lead pitch(s), etc.
Electronics Forum | Thu Aug 05 15:26:42 EDT 1999 | Brian E. Steelglove
| | I am currently in the process of setting up an SMD Parts Package Database. The database will contain dimensional information to be used by the placement machinery to process parts (I.E Package Type, # of Leads, Lead dimensions, Lead pitch(s), etc
Electronics Forum | Thu Aug 05 10:40:38 EDT 1999 | John Thorup
| What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes? Profiling - tedious but important. As said, start with the paste manufacturers recomendation which is usually publishe
Electronics Forum | Thu Aug 05 11:15:39 EDT 1999 | John Thorup
| | | | | | | | | Hello, | | If you are using no-clean and they are entrapped in the flux it is also IPC accepted but i havent found a customer yet who agrees with that. Im sure you have checked your profile. I had the same problem with chip compon
Electronics Forum | Wed Aug 04 16:43:58 EDT 1999 | John Thorup
| We are installing a new reflow oven and I have been told that we do not need to vent the exhaust out through the roof since we have a false ceiling. All that is required is to vent above the false ceiling and that the air exchange is great enough t
Electronics Forum | Thu Aug 05 10:46:20 EDT 1999 | Dave F
| We are installing a new reflow oven and I have been told that we do not need to vent the exhaust out through the roof since we have a false ceiling. All that is required is to vent above the false ceiling and that the air exchange is great enough t
Electronics Forum | Wed Aug 04 17:32:52 EDT 1999 | Dave Weihrauch
| | Has anyone out there tried to parylene coat plastic parts prior to soldering them to a pcb? I'm looking at several potential applications where fewer than 5% of my components on a pcb are plastic, yet from a reliability aspect (environmental cond
Electronics Forum | Thu Aug 05 06:58:04 EDT 1999 | Graham Naisbitt
| | | Has anyone out there tried to parylene coat plastic parts prior to soldering them to a pcb? I'm looking at several potential applications where fewer than 5% of my components on a pcb are plastic, yet from a reliability aspect (environmental co
Electronics Forum | Wed Aug 04 21:52:54 EDT 1999 | Dave F
| We're getting field failures in a high impedance portion of the circuit. Think the unpopulated pc card has contaminates because we were able to grow dendrites by applying a 9 volt battery across the suspected pad, placed a drop of de-ionized water
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