Electronics Forum | Wed Jul 07 10:25:13 EDT 1999 | John Thorup
| | Q #1) Is it more reliable to have the mask tent over the vias or risk getting vias half filled with solder? These are vias with an .020" hole and .040" or .050" pad. | | John, | It depends......mainly on the via size. Tenting works on smaller vi
Electronics Forum | Fri Nov 03 07:28:27 EST 2006 | davef
Via filling methods are: * Tenting * Plugging * Capping * Flooding Tented Via. A via covered with dry film soldermask; the via is not filled. When tenting from both sides there may be issues with trapped air that expands during mass soldering. Plug
Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon
| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw
Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F
| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt
Electronics Forum | Fri Feb 19 06:45:29 EST 1999 | Charles Stringer
Does anybody have any reliable alternatives to device bake out for plastic bodied components. We do not use a whole package at time and therefore have to oven bake the balance before we can use them. I have come accross dry nitrogen storage chambers
Electronics Forum | Fri Jun 18 15:04:19 EDT 1999 | Scott Cook
| Scott, | | I do hurt easy. Be gentle, at least that's what I tell all the women in my life though quickly diminishing supply - oops. I do not happen to believe this statement. I have seen you dodge many a penned "dart" on this very forum. Since I
Electronics Forum | Fri Jun 18 15:54:29 EDT 1999 | M Cox
| | Scott, | | | | I do hurt easy. Be gentle, at least that's what I tell all the women in my life though quickly diminishing supply - oops. | | I do not happen to believe this statement. I have seen you dodge many a penned "dart" on this very foru
Electronics Forum | Tue Feb 06 18:19:30 EST 2001 | davef
Now that's surprising that your board fabricator would say the mask was cured properly [without even inspecting the boards]. I wonder if they can backup those BOLD words when testing your boards with the webbing problem. The reason you can�t find t
Electronics Forum | Tue Jul 27 11:32:01 EDT 1999 | M.L.
| | Presently protos of micro-bgas (80i/o) pitch .030/.031 | | 12BGA per assembly | | | | The board is a (.062, 4 layers) FR-4 using Dry film | | Pads .014inch | | Vias within footprint .020inch | | Vias to be filled by bottom side(solder side) only
Electronics Forum | Thu Jul 12 16:57:46 EDT 2007 | jmelson
Canyou see this contamination? Is it solder beads, flux or something else? If flux, then more cleaning should help, either more time, more cycles through the cleaner, etc. If it is solder beads that are not melted to the rest of the solder, then s