1、Reduced forward voltage or high reverse resistance: When the diode is forward biased, a large drop in forward voltage may indicate damage or malfunction of the diode. Also, a high reverse resistance (reverse leakage current) may indicate a problem with the diode.
2、Reverse Voltage Exceeding Rating: Diodes have a maximum reverse voltage rating. If the reverse voltage exceeds this value, the diode may break down, causing failure or damage.
Thermal failure: When diodes are operated under high power or high temperature conditions, thermal failure problems may occur. This can lead to changes in the electrical characteristics of the diode, such as increased forward voltage drop or increased reverse resistance.
3、Insufficient response speed: In some high-frequency applications, the response speed (switching speed) of the diode may become the limiting factor. If the response of the diode is not fast enough for the needs, it may be necessary to choose a faster diode or use another solution.
4、Temperature Drift: The electrical characteristics of a diode may drift with temperature. This means that at different temperatures, parameters such as forward voltage drop and reverse leakage current of the diode may change.
Electrothermal effect: When a high current passes through a diode, it will generate a certain amount of power consumption, resulting in an increase in temperature. If the heat dissipation system is not properly designed or the rated current of the diode is exceeded, the diode may overheat and fail.
I found some articles by searching for how diodes work, but didn't get all the answers, anyone have any other suggestions?