Can the fast recovery diode be used as a rectifier diode?
Fast recovery diodes cannot be used as rectifier diodes, and there is a big difference between the two, as follows:
1. Different characteristics.
1. Fast recovery diode: because the base area of the fast recovery diode is very thin, the reverse recovery charge is very small, which not only greatly reduces the trr value, but also reduces the transient forward voltage drop, so that the tube can withstand a high reverse voltage.
2. Rectifier diodes: rectifier diodes use the unidirectional conductivity of PN junctions to turn alternating current into pulsating direct current. Rectifier diodes have a large leakage current, and most of them are surface contact material packaged diodes.
Second, different structures.
1. Fast recovery diode: the internal structure of fast recovery diode is different from that of ordinary diodes. Base I is added between P-type and N-type silicon materials to form P-I-N silicon wafers.
2. Rectifier diode: it usually contains a PN junction with positive and negative terminals. The most important characteristic of diodes is unidirectional conductivity. In the circuit, the current can only flow in from the positive pole of the diode and out from the negative pole.
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