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December 2003

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Subject:
From:
Steve Kelly <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 12 Dec 2003 08:30:53 -0500
Content-Type:
text/plain
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Hi Rudy'
It is a Type III Grade A gold per MIL-G-45204 - 99.9% pure, knoop less than
90. Regards Steve Kelly

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Rudy Sedlak
Sent: Thursday, December 11, 2003 6:24 PM
To: [log in to unmask]
Subject: Re: [TN] Cleaning of Wire Bondable Gold

Steve:

I suspect you are not plating a pure gold, but a "hard gold", which means an
alloy...and the alloy metal is oxidizing...

Given that, a mild acid should be ideal...suspect a citric acid based
product
would clean things up nicely.

If you have problems with the matter, contact me directly, I am sure we can
find something that will do the job easily.

Rudy Sedlak
RD Chemical Company

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