Electronics Forum: wire and bond (Page 2 of 27)

gold wire bonding

Electronics Forum | Wed Dec 28 21:18:12 EST 2005 | davef

You don't TS bond gold wire to nickel [of ENIG] for the same reason that you don't TS bond gold wire to hard gold. [Nickel or maybe cobalt is used to harden soft gold.] Together nickel and gold produce unreliable bonds. Look here: * http://www.smta.

gold wire bonding

Electronics Forum | Tue Dec 27 14:51:49 EST 2005 | davef

What's the issue and situation?

gold wire bonding

Electronics Forum | Thu Dec 29 03:57:16 EST 2005 | sparrow

Hello Chris, To be honest, it's hard to believe you could not bond to ENIG at all. Yes, the gold layer is thin and hard, but it just narrows the process window and does not make the bonding impossible. I say this, because we have been using TS gold w

gold wire bonding

Electronics Forum | Fri Jan 20 10:27:22 EST 2006 | sparrow

Hello David, No, the capillary does not scrub through the gold layer. At least, we have never seen it. We replace the capillary after approx. 200k bonds. Regards, Sergey

gold wire bonding

Electronics Forum | Sun Jan 22 20:45:24 EST 2006 | yihui

Hello Sergey, thanks for your input. The capillary i'm using seems to pick up material from the bond surface fairly quickly. Can't think of a solution at the moment. regards, david.

Plating for aluminum wire bonding

Electronics Forum | Mon Mar 03 10:38:28 EST 2003 | davef

Electroplated nickel and electroplated gold is the more �traditional� finish for aluminum wire bonding. That surface was an extension of gold thermosonic wire bonding that requires a thick [50 thou min] gold surface. For years fabricators recommend

gold wire bonding

Electronics Forum | Fri Jan 20 02:34:16 EST 2006 | yihui

Hi, i'm david, new to this forum. Came across your posting about using a delvotec bonder to TS bond to a ENIG pad. Given that the immersion gold layer is thin, does the capillary scrub through the gold layer to expose the underlying nickel? Does your

gold wire bonding

Electronics Forum | Wed Dec 28 16:03:53 EST 2005 | Chris

I have lots of experience with thermosonic gold ball bonding. You can read the literature and you will probably find some papers that say you can do it. I have never been able to do it. We gold ball bond all day long with little problems at all bu

Aluminum wire bonding

Electronics Forum | Wed Mar 17 21:42:19 EST 1999 | Chuck Garth

We are presently aluminum wirebonding to gold plated lands. Our board manufacturer has been very inconsistient in the quality. It seems as though theey are over etched by about half the amount they should be. Can anyone give me the spec's that normal

Plating for aluminum wire bonding

Electronics Forum | Sun Mar 02 12:16:29 EST 2003 | ramanandkini

Recently, one of our new vendor supplied us PCBs with Electroplated Nickel and Gold. We have the other regular source giving us ENIG plating. In both the wirebonding quality is OK. How do we benchmark this? Which one is suitable for production with l


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