What are the consequences of replacing fast recovery diodes with ordinary diodes? — SUNMATE
What are the consequences of replacing fast recovery diodes with ordinary diodes?
The fast recovery diode is different from the common rectifier diode. The fast recovery diode is small and easy to install. It can be installed in the switching power supply or charger. Its unique design makes the forward current in the circuit larger and the reverse recovery time shorter. It can change the current direction uninterruptedly in a short time, so it is mostly used in switching power supply. The fast recovery diode has a very strong withstand voltage in the circuit. When you replace the fast recovery diode with an ordinary diode, it is likely to lead to excessive consumption of the diode, resulting in excessive burden on the circuit, which will reduce the efficiency of the power supply. The most serious consequence is to burn out the diode, resulting in short circuit or explosion of the circuit.
The internal structure of the fast recovery diode is different from the ordinary PN junction diode. It belongs to the PIN junction diode, that is, the base I is added between the P-type silicon material and the N-type silicon material to form a PIN silicon chip. Because the base region is very thin and the reverse recovery charge is very small, the reverse recovery time of the fast recovery diode is short, the forward voltage drop is low, and the reverse breakdown voltage (withstand voltage value) is high.