Ask your customer to pay for the PCBA once it undergoes the Ionic Contamination Test with Omega tester as the flux residue will become white residue on the PCBA. Who is your customer who might advice you how to go about the process. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of WTSJ-Willis Tam
Sent: Wednesday, 11 July 2012 3:14 PM
To: [log in to unmask]
Subject: [TN] 答复: [TN] Ionic Contamination Test for Non-clean PCBA, is it really necessary?

Bob,

The Omega Test is not yet set up, as I don't have the test result now. 

Actually, we don't want to set up such a test.


Regards
Willis Tam


-----邮件原件-----
发件人: TechNet [mailto:[log in to unmask]] 代表 Robert Kondner
发送时间: 2012年7月10日 21:50
收件人: [log in to unmask]
主题: Re: [TN] Ionic Contamination Test for Non-clean PCBA, is it really
necessary?

Willis,

  I would be curious to hear the test restuls.

 Do you have any rework ( :-)  ) and do you need to clean that for cosmetic
appearance? If so soes that cleaning affect the No Clean flux?

Thanks,
Bob K.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of WTSJ-Willis Tam
Sent: Tuesday, July 10, 2012 12:13 AM
To: [log in to unmask]
Subject: [TN] Ionic Contamination Test for Non-clean PCBA, is it really
necessary?

Hi Technet,

We have implemented non-clean SMT and wave soldering processes for more than
10 years and there's no any issue, but recently one of our new customer
required us to buy the Omega tester and set up the Ionic Contamination test
for the non-clean PCBA, according to IPC-TM-650. 2.3.25.   

We feel the Ionic Contamination test might not be an appropriate test for the
non-clean PCBA, but is there any technical paper or industry standard for
this topic? We need some supporting documents for further discussion with our
customer.

Any suggestion/feedback would be appreciated.

Regards
Willis Tam


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