Immersion Au Plating for Wire Bonding: Important Question

Summary for immersion au plating Discussion

immersion Au plating for wire bonding is the core question here: Vahid Goudarzi asks whether an immersion gold finish can meet a 0.5 micron gold thickness requirement for wire bonding. The excerpted answer shown in the thread is not a technical response to the plating question; it simply says, "Please visit Amazon," and does not address whether immersion gold can provide sufficient thickness or suitability for bonding. Because the available thread text is incomplete, no reliable conclusion can be drawn from the excerpt about process capability, thickness control, or wire-bond performance. The practical takeaway is that the question remains unanswered in the provided source, so a proper technical source or the full thread would be needed before deciding whether immersion Au is appropriate for this application.

Q. I need to know whether immersion Au plating has been used for wire bonding application. Our specification for Au thickness is 0.5 micron. Can immersion process provide sufficient Au thickness that is required for wire bonding application?

Vahid Goudarzi
– Fort Lauderdale, Florida, USA
2003

A. Please visit SMTnet This site has in depth research information under electronics forum. You need to search for immersion gold or wire bonding. Alternately, please check a book by Mr.Harman, Wire Bonding in Microelectronics
[on
Amazon<!–,
…
on AbeBooks –> affil links]
published by McGraw Hill. We have a wire bonder and we have info gathered from experienced platers. I can try to answer your specific questions.

Thanks,

RAMANAND KINI
– India
2003

A. Did you get the information from SMTNET? The MIL standard for wire bond strength is MIL-Std-883.

RAMANAND KINI
– India
2003