Electronics Forum | Tue Sep 24 23:03:14 EDT 2002 | redmary
we used the ball bonding, just normal chip on board. as I know the the electroless Ni/immersion Au, the gold thickness is about 0.13um at most, what about chemical plating or electrolytic plating? any experience on it, thanks
Electronics Forum | Fri Sep 27 10:05:07 EDT 2002 | oconnorp
I spec COB using wire bond attach - 0.75um � 0.25 Gold over 5um � 3 Nickle.
Electronics Forum | Fri Sep 27 11:20:21 EDT 2002 | davef
Mar, The previous post makes the best point. Your finish spec depends on the COB process you plan to use. Is your process: * Gold wire bond * Aluminum wire bond * Flip chip * Er, watt
Electronics Forum | Thu Sep 26 12:21:24 EDT 2002 | dragonslayr
What are the specs of a Formica type bench top? Gloss or mottled finish? Should the edge be straight, rolled or bull-nosed? Can I get it in ESD safe composition? Can you recommend a good calibrator of formica?
Electronics Forum | Thu Sep 26 20:26:35 EDT 2002 | davef
I got one, but you don't need one. Coy, eh? Oh, but these measurements need to be soooo precise, don't they?
Electronics Forum | Thu Sep 26 20:25:06 EDT 2002 | davef
When we DOE a board, we use the following independent print variables: * Print pressure * Print speed * Separation speed * Aperture orientation * Squeegee hardness
Electronics Forum | Wed Oct 02 15:20:55 EDT 2002 | Eric
Is there a steadfast rule of thumb for a good solder joint on an Enig Gold board. I come across this number 217C when discussing BGA profiles. Is this a published number? I sure could use a reference. Anybody feedback is appreciated.
Electronics Forum | Wed Oct 02 16:13:05 EDT 2002 | babe
Have you had your solder pot tested? I find that levels of contaminants can rend a solder joint that dull look.
Electronics Forum | Thu Sep 26 17:59:20 EDT 2002 | dragonslayr
Mustard - I would like to suggest you search a more appropriate site for your answer. Maybe a gamers chat room would be helpful. Good luck
Electronics Forum | Fri Sep 27 08:36:27 EDT 2002 | alewis
We are a manufacturer of placement machines and I believe that you asked if there was a reference that can be used to determine the tape sizes for most SMD packages. We review the catalogs from Practical Components and Top Line to determine tape size
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