Common problems and solutions of rectifier diodes — SUNMATE

Common problems and solutions of rectifier diodes

What problems will rectifier diodes encounter in circuit applications? Many conventional problems have simple solutions.

Common Question 1 of Rectifier Diodes: How to deal with the severely burned Rectifier Diodes?

Answer: The fast recovery rectifier diode is very hot, even if it is replaced with a higher power fast recovery rectifier diode, it is still very hot. In this case, we recommend using an ultra fast recovery rectifier diode.

Common Question 2 of Rectifier Diodes: How to Calculate the Power Consumption of Rectifier Diodes?

Answer: There is not much meaning in calculating the power consumption of rectifier diodes. It is recommended that you consult relevant standard books and pay attention to the key parameters of surge current and uniform current. Because the voltage at both ends of the large electrolysis is 0 at the moment of startup, the current that can pass through the diode or bridge is extremely high. It is necessary to pay attention to whether it is within the range allowed in the standard book. Moreover, during normal operation, when the diode or bridge heats up, the allowable uniform current that can pass through will decrease, This is the same explanation in the standard book.

Common question three of rectifier diodes: What are the common parameters of rectifier diodes?

Answer: The common parameters of rectifier diodes include: Z large uniform rectifier current IF, Z high reverse operating voltage VR, Z large reverse current IR, breakdown voltage VR, Z high operating frequency fm, reverse recovery time tre, and zero bias capacitor CO. It is worth noting that due to manufacturing process constraints, even the same type of diode has significant parameter discreteness.