Characteristics, testing methods, and parameters of crystal diodes 2

3. Breakdown characteristics

When the reverse voltage increases to a certain value, the reverse current increases sharply, and this phenomenon is called reverse breakdown (see curve III). The reverse voltage at this point is called the reverse breakdown voltage. The reverse breakdown voltage values of pipes made of different structures, processes, and materials vary greatly, ranging from 1 volt to several hundred volts, and even up to several thousand volts.diode

4. Frequency characteristics

Due to the presence of junction capacitance, when the frequency reaches a certain level, the capacitance impedance is small enough to short-circuit the PN junction. Causing the diode to lose unidirectional conductivity and fail to operate, the larger the PN junction area, the larger the junction capacitance, and the less it can operate at high frequencies.diode