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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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A switching diode is suitable for switching a small signal of up to 100 mA, acting as a rectifier. In contrast, a rectifier diode is used for AC line rectification (from alternating current to direct current). Switching diodes are designed to handle a voltage of less than tens of volts. Those in small surface-mount packages are widely used.
A switching diode, a type of pn junction diode, is also called a small-signal diode. Applications of pn junction diodes include rectification. Diodes for mains rectification require a high withstand voltage (200 to 1000 V) and a high rated current (0.5 A or higher). In contrast, switching diodes are designed to be used for low-voltage logic. Therefore, switching diodes provide a low withstand voltage of 80 to 200 V and a low rated current of 0.15 to 0.5 A. AS a result, it is possible to reduce the junction area of switching diodes and thereby realize low capacitance and short reverse recovery time*.
Switching diodes are used in a wide range of electronic devices for various applications, including switches, transient voltage suppressors, diode logic, voltage clamping circuits, and voltage detection circuits.
Fig. 1 shows Toshiba's classification of diodes, including switching diodes.
* Reverse recovery time is not guaranteed for some switching diodes
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