Electronics Forum | Tue Jul 27 16:44:31 EDT 1999 | Earl Moon
| | | 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(sol
Electronics Forum | Wed May 27 13:42:08 EDT 1998 | Chrys
| R&D is currently designing a board with smt components on both sides of the board. They are adding a 16 pin IC Gull wing. on the bottom side of the board. I have asked for only caps and resistors to be placed on the bottom side. Is there a recommen
Electronics Forum | Wed Jul 21 10:05:22 EDT 1999 | Mark Quealy
| | | I recently switched from solder paste in 500 gram jars to 500 gram tubes. I did this to try to limit the time the paste is exposed to the room environment. But we have a need to clean the stencil every 4 - 5 boards which means taking the bulk p
Electronics Forum | Thu May 21 20:06:12 EDT 1998 | Bill Schreiber
| Y'all: IPC set-up a site addressing the environmental issues of the printed circuit fabrication industry. Some of it is interesting and applicable to the assembly business as well, even though not aimed directly at assemblers. IPC has recently t
Electronics Forum | Thu Sep 09 22:18:13 EDT 1999 | Dave F
2 will have enormous impact on every other process. | | | thank in advance. | | | scott. | I appreciate your sincere answer. | would tell me the hint about printer if i's possible | To tune our smt process we have to know what is the major X
Electronics Forum | Thu May 13 10:06:06 EDT 1999 | C.K.
| | I am looking for anyone who has converted over to VOC Free flux. I need some info on any problems, etc. that you might have had. | | | | Please E-mail me at wes.ruggles@vickers-systems.com or call at (513) 494-5229 | | | | Thanks | | Wes Ruggl
Electronics Forum | Thu Apr 15 10:05:50 EDT 2010 | dwonch
Hi all, Long story ahead.... We are having issues with board vendors on some of our higher layer count (thick) boards. Specifically under BGAs with high aspect ratio vias (14:1). We are using ENIG finish and a lead free process. Basically we get t
Electronics Forum | Wed Jul 04 12:35:19 EDT 2001 | davef
I thought I responded this this a while ago, guess NOT!!! Wow, Dano yagot Entek boards that are that old!!!! Coo. Sounds kwazy that you�d end-up with that volume of old boards, but it�s probably one of those deals where correcting the problem keep
Electronics Forum | Wed Feb 25 01:24:34 EST 1998 | Steve Gregory
Dave, I confess I was a tad too general and a bit too extreme describing the way ALL solder joints look on palladium coated leads. I should been more specific about the "pillow-effect". I've seen it regularly with palladium coated leads on small SOT
Electronics Forum | Tue Feb 08 14:56:09 EST 2011 | rkr76
Hello everyone, I have a question regarding wavesoldering and measuring if a proces/machine is in control. I made a custom carrier for measuring contact time, parallelism, solder temperature, coveyorspeed and some data of the preheat section. The s
