Schottky diode function

effect

Schottky diode, also known as Schottky barrier diode (SBD), is a low-power, ultra high speed semiconductor device.

The most significant feature is the extremely short reverse recovery time (which can be as small as a few nanoseconds), and the forward conduction voltage drop is only about 0.4V. It is commonly used for high-frequency, low-voltage, and high current rectification

Diodes, freewheeling diodes, and protective diodes are also used as rectifying diodes and small signal detection diodes in circuits such as microwave communication. In the field of communication electronics

Commonly found in sources, frequency converters, etc.

A typical application is in the switching circuit of bipolar junction transistors (BJTs), where a Shockley diode is connected to the BJT to clamp the transistor

When in the conducting state, it is actually very close to the cut-off state, thereby improving the switching speed of the transistor. This method uses typical numbers such as 74LS, 74ALS, 74AS, etc

The technology used in the TTL internal circuit of ICs.

The biggest feature of Schottky diodes is that the forward voltage drop VF is relatively small. At the same current, its forward voltage drop is much smaller. Additionally, its

Short recovery time. It also has some drawbacks: lower voltage resistance and slightly larger leakage current. When selecting, comprehensive consideration should be given.