Electroless gold is used for wire bonding applications and only if specified
by the
designer.  The process is to plate electroless nickle and immersion gold
followed
immediately by electroless gold.  The immersion gold is self-limiting to
less than
10 millionths but it lays down enough gold that you can build on it in the
electroless
bath.  Let's try not to use confusing terms like strike gold or flash gold
unless defined.

> -----Original Message-----
> From: Jack Olson [SMTP:[log in to unmask]]
> Sent: Thursday, October 07, 1999 11:34 AM
> To:   [log in to unmask]
> Subject:      [TN] Flash Gold vs. ???
>
> Do some manufacturers use the soft electroless gold (deep bath?) in place
> of
> immersion gold? Is there some place I could learn what the difference is?
> None of my books address it, and I always thought flash gold was a
> self-limiting process that wouldn't go over 10 mils, but now we are
> hearing
> it can be any thickness we want. True?
>

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