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January 2013

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Subject:
From:
"Stadem, Richard D." <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Stadem, Richard D.
Date:
Wed, 2 Jan 2013 18:59:12 +0000
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Just as I suspected. Thank you all for your valuable feedback. Sonoscan also provided me with good information. It appears that C-SAM does not harm components, whether or not the wirebonds are encapsulated.

-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]] 
Sent: Wednesday, January 02, 2013 12:52 PM
To: 'TechNet E-Mail Forum'; Stadem, Richard D.
Subject: RE: [TN] Susceptibility of electronics to C-SAM

I would be surprised to read that C-SAM would damage parts. 
Cleaners operate in the thousands of cycles per second. C-SAM in the millions.  Damage is done we harmonics are setup. I would not expect to see damaging harmonics set up at super high frequency. 

Guy

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Monday, December 31, 2012 1:48 PM
To: [log in to unmask]
Subject: [TN] Susceptibility of electronics to C-SAM

I have a good understanding of the effects of damage that can be caused by cavitation when cleaning electronics using ultrasonic wash with the wrong sweep frequency, but does anyone know if ultrasonic energy from C-SAM analysis can cause damage to electronics? I recently had a customer object when I suggested using Sonoscan to inspect some components for die bond issues, and he said that he had heard ultrasonics could damage electronics.
I explained to him that while that was possibly true of ultrasonic cleaning (if not done properly), I had never heard of C-SAM harming electronics.
Anyone have any experience with damage caused by C-SAM inspection?

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