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1996

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Subject:
Re: Wire Bonding
From:
[log in to unmask]
Date:
Wed, 16 Oct 96 08:00:30 EST
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     We also monitor Knoop hardness of the plated deposit from our soft 
     gold bath on a monthly basis. Knoop hardness should be under 80 knoop 
     for gold wire bonding.
     
     Kim
     Hadco Ca.


______________________________ Reply Separator _________________________________
Subject: Wire Bonding
Author:  [log in to unmask] at SMTPLINK-HADCO
Date:    10/15/96 7:08 PM


Advice please !
Is there a quantitative test that can be carried out on soft gold electroplate
to qualify its suitability for wire bonding ?
 Gold thickness and purity already to customers spec.
Note in this instance gold is on a nickel undercoat.

Jim Douglas
Kam Circuits

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