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Date: | Tue, 9 Jul 1996 16:20:08 -0400 |
Content-Type: | Text/Plain |
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Hi!
Accelerated aging factor for a new PCB surface finish? Do you mean
oxidation? Intermetallic growth? What type of finish? Please send
additional detailed info covering your request.
Dave Hillman
Rockwell Collins
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Subject: ASSY: calculation of accelerated aging factor
Author: [log in to unmask] at ccmgw1
Date: 7/9/96 2:25 PM
Colleages in PCB industry,
I am a process engineer new in this field, and I am currently searching
for a mathematical formula (or a mathematical model), either physical or
empirical, to calculate the accelerated aging factor for a new PCB surface
finish, inside of a temperature/humidity chamber with constant temperature
as T and constant relative humidity level as RH. Thanks in advance for
your help.
Nora Xiao
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