Electronics Forum | Mon Jan 08 07:46:52 EST 2001 | Juliano Vasconcelos
Hello everybody ! I�ve known thickness of gold over nickel board of chip on board (COB) boards are between 5 �n 15 microinches. A supplier suggested 1 to 4 microinches of gold over nickel ! Have someone any expierince about it ? I�m glad if you help
Electronics Forum | Fri Dec 07 13:15:45 EST 2001 | slthomas
We've experienced similar problems with film caps, specifically Panasonic's parts that are alledgedly compatible with both reflow and wave soldering. They are identified with either GB or JB p/n suffixes, which become either GX, GC, or JC for the ref
Electronics Forum | Thu Dec 06 23:34:25 EST 2001 | Beny
Pls. help. I�ve problem with non-wetting defect at capacitor termination. I have faced this problem at the 2 kinds of termination. One is chip capacitor 0603 that its outer termination surface composed with 100 Sn (Lead free) and another one is Sta
Electronics Forum | Mon Jan 08 20:28:54 EST 2001 | Dave F
Consider the recommendations of J-STD-012 as the baseline for your efforts.
Electronics Forum | Tue Jan 09 13:19:40 EST 2001 | Rob K
Anyone want to convert to microns rather than micro inches? .... or would furlongs be better?
Electronics Forum | Tue Jan 09 21:04:56 EST 2001 | Dave F
So true!!!! I'm with you 100%. I get so tired of those people with their metric this and that. You know what I do? If someone talks centimeters, I just mutiply it times 0.4 to get inches!!! And another thing, if I ever wanted to convert inches t
Electronics Forum | Wed Jan 10 16:33:47 EST 2001 | Michael Parker
Furlongs? won't that be confusing and leave a lot to interpretation? Question: How long do you want it fur? Answer: 6 months, the unit will be obolete by then. and let's not forget the Animal Rights activists, they will have a field day if they beg
Electronics Forum | Wed Jan 10 16:35:03 EST 2001 | Michael Parker
Furlongs? won't that be confusing and leave a lot to interpretation? Question: How long do you want it fur? Answer: 6 months, the unit will be obolete by then. and let's not forget the Animal Rights activists, they will have a field day if they beg
Electronics Forum | Mon Jan 08 20:26:12 EST 2001 | Dave F
Ask your supplier if he will guarantee to cover rework, warranty, and lost business costs, if he's incorrect. Below 2uinch gold is very pourous and not worth anything in preventing corrosion of your nickel undercoat. 3 uinch has to be the absolute
Electronics Forum | Wed Apr 12 21:33:27 EDT 2000 | Micah Newcomb
Billy and Chris have a good point, pad size and geometry will affect proper aperture size and geometry and could result in tombstoning. Also I have seen chips which require special pastes but I have never found this to be the cause of tombstoning, in
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