OSP over copper, lead-free, SAC 305 process.

-----Original Message-----
From: Tan Geok Ang [mailto:[log in to unmask]] 
Sent: Thursday, October 14, 2010 8:23 PM
To: TechNet E-Mail Forum; Leland Woodall
Subject: RE: [TN] Detecting Oxidation Levels of PTH

ImAg Boards?

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Leland Woodall
Sent: Friday, 15 October 2010 3:49 AM
To: [log in to unmask]
Subject: [TN] Detecting Oxidation Levels of PTH

Techies,

We have one assembly that sporadically experiences insufficient solder
fill of plated through holes at the wave soldering process.

If we cross section one of these, what testing equipment is best suited
to detect the presence of oxidation on the PTH walls?  What would be
considered an unacceptable level that would prevent 100% climb?

Thanks in advance for your responses!

Leland

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