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| From [log in to unmask] Wed Oct 16 12: |
06:46 1996 |
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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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