Ask Dr. Adam - How is "clean enough" defined in Electronics?

How "clean enough" is defined in electronics manufacturing, simplified by Dr. Adam Klett, KYZEN’S Director of Science. This episode of Ask Dr. Adam tackles one of the most critical questions in electronics manufacturing: “How clean is clean enough?” and explains why the answer goes far beyond what you can see on a circuit board. Dr. Adam describes how invisible residues such as flux activators, ionic contamination, and other soils can drive corrosion, leakage currents, dendritic growth, and long term reliability failures when heat, humidity, and electrical bias are present. He outlines how modern IPC cleanliness requirements emphasize objective evidence over visual inspection alone, focusing on the relationship between residues, operating environments, and electrical performance under temperature humidity bias conditions. He reviews surface insulation resistance (SIR) testing, defined in IPC TM 650 2.6.3.7, as a preferred method for evaluating electrochemical reliability, with chemical tools like ion chromatography and ROSE used as complementary analyses rather than standalone gatekeepers. Dr. Adam explains that there is no universal “clean enough” number; instead, cleanliness levels must be set based on application specific risk, product environment, and service life so residues are controlled to a level that does not pose an unacceptable reliability risk. Website: https://Kyzen.com Twitter: https://bit.ly/3Q0UpX6 LinkedIn: https://bit.ly/3RoMFPJ Speaker bio:   / aklett   Subscribe to our YouTube: https://bit.ly/3TpxrMr