Electronics Forum | Fri Sep 18 11:26:37 EDT 1998 | Earl Moon
Talk To You Later | | | Ta Ta Ya La | | | Dave F | | | | I've even forgotten what I was going to say - but one thing I do remember is how valuable your ever present information is. | | This clean/no clean thing is getting more interesting every day.
Electronics Forum | Tue Sep 08 15:11:26 EDT 1998 | Mike Demos
Rich: In my experience, I have seen three cases of SMT Capacitors cracking: 1. Due to thermal shock when entering the wave solder. Note that these were 1210 package sizes on the wave solder side of the boards. We were able to trace this back to th
Electronics Forum | Thu Sep 03 14:09:22 EDT 1998 | Matthew Park
Rich, From my experience, few causes of capacitor cracking are: - mechanical stress caused by pick'n place nozzles and chucks. Try to isolate and find cracked caps before boards go thru reflow or wavsoldering. - thermal stress by reflow pro
Electronics Forum | Thu Sep 03 11:31:43 EDT 1998 | Ben Salisbury
| I am in need of possible causes and solutions to capacitors that are failing in the field. | Are there issues in our process that need to be | checked? | Some people said the problems are due to improper | storage. Others say it is thermal stre
Electronics Forum | Tue Sep 22 12:52:56 EDT 1998 | Bernard Mulcahy
| | | | | Has anyone been able to link a Mydata with the Pads Software. The book say's it can not be done but someone told you can?????? Could someone put me on the right road. | | | Thank You | | | John Kirby | | John, Mydata themselves will supply
Electronics Forum | Mon Aug 24 07:12:44 EDT 1998 | Tryin'
What conditions make Earl Moon say "damn, why can't XXX get the HASL right? Just look at this crummy board. Get a RMA No. Stat." | | | Board shops and us, the user, have a lot on our hands. As far as getting traces - this is done using an etch re
Electronics Forum | Tue Aug 18 16:10:40 EDT 1998 | Earl Moon
| Question: | If a PCB and the lands of a part both had electroless plating, would there be a higher tendancy for intermetallics to form in and on the solderjoint...versus just the PCB or Just the part being plated? | I'm currently running into this
Electronics Forum | Thu Aug 13 07:53:40 EDT 1998 | Earl Moon
| | Couple of questions. | | 1) Are we talking alumina substrates as the ceramic material? | | 2) Are we co-firing gold as the conductors on the substrate surface? | | 3) In other words, is this a hybrid thick film circuit? | | 4) If so, how large or
Electronics Forum | Fri Aug 21 13:43:13 EDT 1998 | Ben Salisbury
| Hello everyone, | I am currently running a gold plated SMT board and am experiencing tiny solder balls between the pads and the masking between the 20 mil pitch devices. I'm looking at these boards with a 60x microscope. IPC-610 say's any visible s
Electronics Forum | Thu Aug 13 12:55:46 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: http://www.pwbrc.org/ a
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