Reverse Recovery Characteristic of Schottky Barrier Diodes (SBDs)

The reverse recovery time (trr) of the SBD is determined by the LC resonance circuit based on the junction capacitance and the inductance of the external wiring.  (Since the junction capacitance is hardly influenced by temperature, trr is the same from room temperature to high temperature.)
For pn junction diodes, trr becomes longer as the temperature rises. As a result, the switching characteristics of the SBD become more and more advantageous, which makes it suitable for higher-frequency switching.

Note:
Since SBD is a unipolar device, it does not have reverse recovery time due to carrier recombination like pn junction diodes. However, the current waveform charging the capacity between the terminals of SBD is observed like the reverse recovery time of the p-n junction diode.
Therefore, it is described as reverse recovery time in this document.

 

Equivalent circuit when reverse voltage is applied to SBD
Fig. 2-10(a)  Equivalent circuit when reverse voltage is applied to SBD
Characteristic of junction  capacitance of SBD
Fig. 2-10(b) Characteristic of junction capacitance of SBD
Typical reverse characteristic of SBD
Fig. 2-10(c) Typical reverse characteristic of SBD

Chapter II : Diodes

Types of Diodes
Functions of Rectifier Diodes
Forward Characteristic of Rectifier Diodes (IF-VF Characteristic)
FRDs (Fast Recovery Diodes)
Voltage Regulator Diodes (Zener Diodes)
TVS diode (ESD protection diode)
Difference between TVS Diodes and Zener Diodes (1)
Difference between TVS Diodes and Zener Diodes (2)
Variable-capacitance Diodes (Varicap Diodes)
Schottky Barrier Diodes (SBDs)
Difference Depending on Metal of Schottky Barrier Diodes (SBDs)
Characteristics Application of Various Diodes

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