Hello Subscribers,

Does anybody have any information on 'Transfer Impedance' testing for sheet
metal finishes.  In particular how this could affect EMC.  Are there any
standards?

Wayne Fitzgerald





Michael McMonagle <[log in to unmask]> on 25/07/2005 16:14:53

Please respond to "(Leadfree Electronics Assembly Forum)" <[log in to unmask]>;
      Please respond to Michael McMonagle <[log in to unmask]>

To:   [log in to unmask]
cc:    (bcc: Wayne Fitzgerald/EU/Artesyn)

Subject:  Re: [LF] Off Topic? - Hex Chrome plating replacements



Phil,
        If you have specific corrosion resistance requirements to meet,
clear chromate will not measure up to yellow in performance. Clear chromate
withstands 16-24 hours in neutral salt spray while yellow withstands 96
hours. If you have questions about RoHS and plating, a good resource is the
message board area at www.finishing.com. They have started up a section
devoted to RoHS, and the board is frequented by folks with vast experience
in metal finishing of all types. Give 'em a look..

Mike McMonagle
Quality Engineer
OYO Geospace
7007 Pinemont Drive
Houston, TX 77040
713-986-8650


-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Phil Nutting
Sent: Monday, July 25, 2005 9:36 AM
To: [log in to unmask]
Subject: [LF] Off Topic? - Hex Chrome plating replacements

Good morning,

I'm not sure if this is the right group to answer this, but here goes
anyway.

As we move forward with RoHS complaince the question of plating steel
and aluminum come up repeatedly.  Currently we use Gold Irradite on our
aluminum and Yellow Chromate on steel.

What is the industry switching to?  The clear versions of these?

Thanks in advance,

Phil

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