Schottky diode and fast recovery diode difference
Next, we will give you a detailed introduction to Xiaobian Fu Technology Co., Ltd.
The difference between the Schottky diode and the fast recovery diode is that the recovery time of the former is about 100 times smaller than that of the latter. The reverse recovery time of the former is about several nanoseconds~!
The former has the advantages of low power consumption, high current, high speed ~! Electrical characteristics are of course diodes A ~!
Fast recovery diode in the manufacturing process using gold-doped, simple diffusion and other processes, can obtain a higher switching speed, but also can get a higher voltage. The current fast recovery diode is mainly used in inverter power supply rectifier components.
Schottky diodes: reverse voltage value is lower 40V-50V, on-state voltage drop 0.3-0.6V, less than 10nS reverse recovery time. It is a "metal semiconductor junction" diode with Schottky characteristics. Its forward voltage is lower. In addition to the material of the metal layer, gold, molybdenum, nickel, titanium and other materials can also be used. Its semiconductor material uses silicon or gallium arsenide, mostly N-type semiconductors. This device is conductive by majority carriers, so its reverse saturation current is much larger than a PN junction that conducts with minority carriers. Since the storage effect of minority carriers in a Schottky diode is very small, its frequency response is limited only by the RC time constant, and therefore, it is an ideal device for high frequency and fast switching. Its operating frequency can reach 100GHz. Also, MIS (metal-insulator-semiconductor) Schottky diodes can be used to make solar cells or light emitting diodes.
Fast-recovery diode: With a forward voltage drop of 0.8-1.1V, 35-85nS reverse recovery time, switching quickly between on and off, increasing the frequency of use of the device and improving the waveform. Fast recovery diode in the manufacturing process using gold-doped, simple diffusion and other processes, can obtain a higher switching speed, but also can get a higher voltage. The current fast recovery diode is mainly used in inverter power supply rectifier components.
In general, 5~20A fast recovery diodes are packaged in a TO-220FP plastic package. High-power fast recovery diodes of more than 20A are packaged in a TO-3P plastic package with a metal heatsink on top, and a fast recovery diode with a 5A resolution uses DO-41, DO. -15, or D0-27 and other specifications plastic package.
You also want to learn more information, semiconductor component service providers, Yiguang Optocoupler Xiaobian welcome you to consult...
Chinese
English