Schottky diodes are divided into two types of packages: lead and surface mount (mount). Schottky diodes with leaded packages are usually used as high-frequency high-current rectifier diodes, freewheeling diodes or protection diodes. It offers single tube and dual tube (dual diode) packages. Schottky diodes have three pin-out modes: common cathode (the cathodes of the two tubes are connected), common anode (the anodes of the two tubes are connected) and series (the anode of one diode is connected to the cathode of the other diode). Surface mount Schottky diodes include single-tube, double-tube, and triple-tube packages, with a19 pin lead-out mode.
The functions of Schottky diodes are as follows:
Schottky diode, also known as Schottky barrier diode (SBD), is a low-power, ultra-high-speed semiconductor device. The most notable feature is that the reverse recovery time is very short (can be as small as a few nanoseconds), and the forward conduction voltage drop is only about 0.4V. Most of them are used for high frequency, low voltage, high current rectifier diodes, freewheeling diodes and protection diode.
Schottky diodes are used as rectifier diodes and small signal detector diodes in microwave communication circuits. It is common in communication power supplies, inverters, etc. A typical application is that in the switching circuit of the bipolar transistor BJT, the Schottky diode is connected to the BJT clamp, so that the transistor is actually in a very off state when the transistor is turned on, thereby increasing the switching speed of the transistor. This method is used in the TTL internal circuits of typical digital integrated circuits, such as 74LS, 74ALS and 74AS.
The structure and characteristics of Schottky diodes make them suitable for high-frequency rectification in low-voltage and high-current output occasions, and for detection and mixing at very high frequencies (such as X-band, C-band, S-band and Ku-band). Frequency, used as a clamp in high-speed logic circuits. Schottky diodes are often used in ICs. The biggest feature of Schottky diodes is that the forward voltage drop is relatively small. Under the same current, its forward voltage drop is much smaller.
The above explanation is about the packaging and functions of Schottky diodes. I hope it will be helpful to you after reading. If you want to learn more about Schottky diodes, please click on our website to browse!