When cleaning printed circuit boards after mounting capacitors, select a solvent suitable for the cleaning purpose, e.g. removal of flux or dust .
Inappropriate cleaning solvent may cause blemishes of residual flux and other foreign substances or cause deterioration of coating resin. As a result, the electrical characteristics, especially insulation resistance, and the reliability of capacitors may deteriorate.
Cleaning conditions depend on the cleaning process and cleaning machines employed.
Confirm that the adopted condition does not affect the characteristics or the reliability of the capacitors.
Unsuitable, excessive or insufficient cleaning conditions may result in deterioration of the performance of a capacitor.
NOTE The details is referred to JEITA ET-7405, and the bath size is 250 mm X 200 mm X 180mm(depth)
As the cleaning solvent becomes contaminated, the concentration of free halogen may become high. This may cause the same failures as Designs of land pattern.
NOTE When a water-soluble flux is used, sufficient cleaning with deionized water and drying are necessary as a finishing operation in the soldering process.
Insufficient cleaning and drying may deteriorate reliability of the capacitor.