|Ask the Experts|
June 3, 2009
Technology to Measure Oxidation Levels
Does technology to measure the level of oxidation on surface mount pads exist? If not, can you suggest a way to quantify or categorize oxidation levels on surface mount pads?
|Expert Panel Responses|
Yes. We use an instrument from ECI Technology to measure oxidation on certain types of surface finishes. The technology is called Sequential Electrochemical Reduction Analysis or SERA. SERA can be used to measure oxidation levels on copper and solders, immersion tin, etc. It will report a thickness value in Angstroms, and it will also report the presence of intermetallic oxides in tin/copper mixtures. We use this piece of equipment to correlate oxidation levels to artificial ageing of different surface finishes. ECI Technologies website. I hope this helps.
There are several companies that specialize in Solderability Testing. I think that would be a better place to start.
Regional Sales Manager
OK International Inc.
The answer is the use of a Wetting Balance Tester to determine the wet ability of the surface mount leads. The technical term is a meniscograph which measure the time to wet and max force in a graphical basis. There are companies which provide this service or you can purchase the machine.
VP Engineering Services
STI Electronics Inc.
|Submit A Comment|
Free Newsletter Subscription
Circuitnet is built for professionals who bear the responsibility of looking ahead, imagining the future, and preparing for it.
Insert Your Email Address