SENSOR UNIT, ELECTRONIC MODULE AS WELL AS PROCEDURE TO CALCULATE THE LEVEL OF CORROSIVE EXPOSURE OF A RESPECTIVE ELECTRONIC MODULE

摘要

The present invention relates to a compact and light-weight sensor unit (10, 10 ') for the electronic module 1, the unit is chemical element that a color change observed in the visible light to the presence of the corrosive and the preferably at least one of the exposed parts (5, 5a, 5b) containing a copper element containing an / or compound comprises at the surface. The invention also relates to a method of calculating the exposure levels of corrosive each of the electronic module (1) and such an electronic module (1). ;