What is the difference between Schottky diode and TVs tube? — SUNMATE

What is the difference between Schottky diode and TVs tube?

(1) Schottky diode is a fast recovery diode, which is a low-power, ultra-high-speed semiconductor device. Its remarkable feature is that the reverse recovery time is very short (as small as a few nanoseconds), and the forward conduction voltage drop is only about 0.4V. Its workmanship is more sophisticated and expensive than ordinary diodes, but it is similar to ordinary diodes in external performance and function.

The Schottky transistor is an element that parallels the Schottky diode between the base and emitter of the triode (as shown in the figure below). With this Schottky diode, the triode can prevent over saturation.

(2) TVs tube: transient voltage suppressor (TVS) is a high-efficiency protection device in the form of diode. When the two poles of TVS diode are impacted by reverse transient high energy, it can change the high impedance between the two poles into low impedance at a speed of 10-12 seconds, absorb up to several kilowatts of surge power, clamp the voltage between the two poles at a predetermined value, and effectively protect the precision components in the electronic circuit from various surge pulses.

It has the following three characteristics:

1. Adding TVS diode to the signal and power line can prevent the failure of microprocessor or single chip microcomputer caused by instantaneous pulses, such as electrostatic discharge effect, surge of AC power supply and noise of switching power supply.

2. The electrostatic discharge effect can release pulses of more than 10000v and more than 60A for 10ms; The general TTL device will be damaged when it encounters a 10V pulse of more than 30ms. Using TVS diode, it can effectively absorb the pulse that will damage the device and eliminate the interference caused by the switch between buses (crosstalk).

3. Placing TVS diode between signal line and grounding can avoid unnecessary noise impact on data and control bus.