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June 1999

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Tue, 8 Jun 1999 13:34:31 -0700
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Todd,

Mil-P-55110 states the correlation factors for different methods in para 6.5.1.
Those methods include the Omega meter, Ionograph and Ion chaser. I can't find
this in the other standards.

K.K. Chin
Artesyn Technologies
Fremont, CA
http://www.artesyn.com




Todd Vorpahl <[log in to unmask]> on 06/08/99 08:51:50 AM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
      Todd Vorpahl <[log in to unmask]>

To:   [log in to unmask]
cc:    (bcc: KK Chin)

Subject:  [TN] Belcore's ionic contamination standard




Anybody familar with interpreting Belcore's ionic contamination standard?

Just got off the phone with someone at alphametals stating that they believe
Belcore has adopted IPC's J001 standard on cleanliness.  The J standard states a
1.56 (10.06) micrograms of Sodium Chloride equivalent per square centimeter
(inch) for assembed PWBs based on the surface area of the board plus components.
Apparently, this is independent of what method (Omega meter, Ionograph, etc.) is
used.

Does anyone else have any input on this?

Todd
847-914-6220

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