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Model, function and application of Schottky diode

The biggest function of the Schottky diode is that the reverse recovery time is very short (can be as small as a few nanoseconds), and the forward voltage drop is only about 0.4V. As a low-power, ultra-high-speed semiconductor device, Schottky diodes are mainly used as high-frequency, low-voltage, high-current rectifier diodes, freewheeling diodes, protection diodes, and also used as rectifier diodes and small signals in circuits such as microwave communications. Detection diode is used.
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Common models of Schottky diodes are as follows:
 
  Package T0-220AB: MBR20100CT, MBR10100CT, MBR2045CT, MBR1 645CT, MBR30100CT, MBR10150CT, MBR3045CT, MBR20150CT, MBR1045CT.
 
   Package T0-247: MBR4045PT, MBR30100PT, MBR40100PT, MBR60100PT, MBR40150PT, MBR30200.
 
  Package T0-263: MBR30150DC, MBR3060DC, MBR3045DC, MBR20150DC, MBR2045DC, MBR20100DC.
 
  Package SMA: SS12, SS13, SS14, SS15, SS16, SS24, SS25, SS26, SS34, SS35, SS36.
 
  Package SMB: SS24, SS25, SS26, SS34, SS35, SS36M7, SB240-SR260, SR2100, SR340-SR360, SR3100, SR540-SR560, SR5100, 1N4007, 1N5819.
 
The structure and characteristics of Schottky diodes make it suitable for high-frequency rectification under low-voltage and high-current output occasions, detection and mixing at extremely high frequencies (such as X-band, C-band, S-band and Ku-band), and high-speed logic circuits Clamp in. Schottky diodes are also commonly used in integrated circuits. TTL integrated circuits like Schottky diodes have long become the mainstream of TTL circuits. The Schottky diode is clamped in the switching circuit of the bipolar transistor BJT by connecting the Shockley diode on the BJT, so that the transistor is in a very off state when the transistor is on, thereby increasing the switching speed of the transistor. This method is used for TTL internal circuits of typical digital integrated circuits, such as 74LS, 74ALS, 74AS, etc.

 

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