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  1. #1
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    Wire Bond Maximum Current and Frequency

    A gold wire bond 15um diameter about 7mm long bonded to from PCB pad to an IC Cu bump.
    How do I calculate the maximum current and frequency this wire bond can support?

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  2. #2
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    Re: Wire Bond Maximum Current and Frequency

    Don't attempt to calculate current, look to empirical
    data. "Back in the day" we would bond post-to-post in
    a package varying bond lengths and test with DC and
    pulsed currents, to failure, and get fusing current vs
    wire length (as in mermetic packaging, all heat has to
    go out the wire ends, so long wires fail first).

    The "maximum frequency" is not about the bond wire
    alone, it has to comprehend the source and destination
    circuits and the care-abouts that involve wire bond
    inductance. A 50-ohm system would have one bond
    wire inductance limit for a given loss@frequency, a
    high-Z low-C input another, and the system says what
    loss is acceptable.

    "bond wire fusing current" would be a good keyword-set.



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