Electronics Forum | Thu Mar 26 11:25:21 EST 1998 | Earl Moon
In December and January (1997 & 1998) a number of people requested information regarding component cracking. I overlooked this until recently thinking design and process requirements were violated. After reviewing the last 14 months consulting effort
Electronics Forum | Wed Mar 25 17:11:20 EST 1998 | Mcox
| We are having some problems with "drawbridging" on 0805 film capacitors. | We have already reduced the pad width from .050" to .040" based on input | from vendor. Defects appear to be random as far as location on the PWB and direction | of placem
Electronics Forum | Tue Mar 24 11:20:18 EST 1998 | Earl Moon
| Anyone have an idea how small a via must be to inhibit significant solder volume escaping into the via? Typically, micro vias are drilled and plated to about .003" diameter. To avoid significant solder "drain off," they should be drilled as shallow
Electronics Forum | Mon Mar 30 16:02:44 EST 1998 | Michael Allen
| We have successfully put .016" vias in .030" pads. | There is no issue with .030" solder balls, since | the actual volume of the .002" via in pad is small | compared to the ball+solder paste volume. | We did notice random bubbles where, apparentl
Electronics Forum | Fri Mar 20 12:30:45 EST 1998 | Bill Schreiber
Smart Sonic introduces the first "No Risk" Guarantee for SMT Stencil Cleaners. No more shopping for a machine from one vendor, a chemical from another vendor and waste treatment process from a third vendor. Only to discover when the process fa
Electronics Forum | Tue Mar 17 09:06:25 EST 1998 | Justin Medernach
| | Hi all, | I would like to have some information regarding the paste in holes process.We are the Backplane manufacturing and dealing with lots of thick PCB and would like to change the processes from wave to paste in hole.Any feed back of info
Electronics Forum | Mon Mar 16 20:00:47 EST 1998 | Jon Medernach
| Maybe I'm doing something wrong, but it seems to me that The Forum takes a lot longer to open up now. It also takes a lot longer to get back to the main Forum page, after reading an individual message, and hitting the "BACK" button. What's up? Is
Electronics Forum | Mon Mar 16 04:46:25 EST 1998 | Grant Petty
We have just go another batch of PCB's from our loaders, and some of the boards are severely warped. The boards are PCI cards and one of the boards is 9mm out at one end. The PCB is 210mm long and 4 layers. I am wondering if anyone knows what could
Electronics Forum | Mon Mar 16 16:57:59 EST 1998 | Earl Moon
| We have just go another batch of PCB's from our loaders, and some of the boards are severely warped. | The boards are PCI cards and one of the boards is 9mm out at one end. The PCB is 210mm long and 4 layers. | I am wondering if anyone knows what
Electronics Forum | Mon Mar 16 09:07:14 EST 1998 | Justin Medernach
| We have just go another batch of PCB's from our loaders, and some of the boards are severely warped. | The boards are PCI cards and one of the boards is 9mm out at one end. The PCB is 210mm long and 4 layers. | I am wondering if anyone knows what
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