Well Francis if you have customers then they may be a source of what is considered clean or not. If not you can choose the standard IPC 10.06Mg or come up with what you believe to be clean. Determine how clean is clean for your business and go with it. We are considering changing ours once again, but for some customers that want a very specific cleanliness level while others basically state 'get it clean'. It depends on the type of customers you have (military, aerospace, commercial, etc...). If you have hi-rel customers than you need to get them really clean (relative of course), while consumer stuff not so clean...

Just a few cents worth...

CAS

Chris Schaefer
Suntron Corporation
Process Engineer
540 N. Rogers Road
Olathe, Kansas 66062
913.393.5878
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Francis Sun
Sent: Thursday, August 10, 2006 11:11 AM
To: [log in to unmask]
Subject: [TN] Ionic/Chloride contamination levels


Hi Forum,

Can anyone tell me what is the general industry acceptance level for
chloride contamination on a assembled board for a class 2 product please.
I am getting conflicting statements from 2 evaluation labs.
One says 6.5ug/in2 is acceptable in the industry.
Another says 3ug/in2 is the industry standard or will/should be the
industry standard.

Is there an IPC committee looking at update the acceptable levels?
Thanks in advance for all inputs, opinions and facts

Regards;

Francis Sun
MARK IV Industries
(905) 624-3025 ext. 1235
Fax: (905) 624-4572

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