I will second what Chris says. The yellow zinc has a surface resistance
that must be penetrated in order to have conduction across joints.
Jim Allan Racal-Datacom
-----Original Message-----
From: James, Chris [SMTP:[email protected]]
Sent: Thursday, October 15, 1998 5:49 AM
To: 'Knighten, Jim'; 'emc-pstc list server'
Subject: RE: Yellow Zinc
Don't have the figures to hand but having checked it out a while
ago we
have moved from the gold/yellow zinc passivation on steel parts
to the
silver/clear finish:
UK spec: BRIGHT ZINC PLATE TO BS 1706 Fe/Zn 8 c 1A
US spec: BRIGHT ZINC, ASTM B633, TYPE III, Fe/Zn 8
This has a much lower resistance. We found the "gold"
unacceptable for
emc considerations.
Chris James
Engineering Services Manager
Dolby Labs Inc.
-----Original Message-----
From: Knighten, Jim
[mailto:[email protected]]
Sent: Thursday, October 15, 1998 1:20 AM
To: 'emc-pstc list server'
Subject: Yellow Zinc
Hi Guys,
Does anyone know what a typical conductivity or resistivity is
for
yellow zinc coating???
Jim
Dr. Jim Knighten e-mail:
[email protected]
Senior Consulting Engineer
NCR
17095 Via del Campo
San Diego, CA 92127 http://www.ncr.com
Tel: 619-485-2537
Fax: 619-485-3788
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