The difference between tvs tube and Zener diode

  Recently, I often see consultations on major related electronic component platforms: the difference between tvs tubes (transient voltage suppression diodes) and Zener diodes (also known as Zener diodes). Ping Shang Xiaobian share one or two below

  The tvs tube is a new product developed on the basis of the voltage regulator tube technology. It is one of a new type of high-efficiency circuit protection device, with a response time of P seconds and high surge absorption capacity; while the Zener diode uses a pn junction inversion To the breakdown state, the voltage stabilizing diode is developed to keep the voltage stable within the range of current change.

  Common point: within a certain range, the voltage at both ends can be limited; the current withstand value of long-term operation is almost the same, and they are all related to the volume power consumption

  difference:

  Working principle: tvs tube: avalanche effect, in the case of high-energy transient overvoltage pulses, the impedance can be immediately reduced to a very low conduction value, allowing a larger current to pass, and clamping the voltage to a predetermined level to avoid precision in the circuit The components are protected from damage. Zener tube: Zener tunneling effect. When the reverse voltage reaches and exceeds the stable voltage, the reverse current suddenly increases, and the voltage across the diode is constant.

  Classification: tvs tube: according to polarity, it can be divided into single and bipolar; according to purpose, it can be divided into general and special type; Zener tube: according to the level of voltage regulation, it can be divided into low voltage diode and high voltage voltage regulator diode; According to the material, it can be divided into N type and P type.

   Purpose: TVS tube: used for transient voltage protection; TVS tube voltage accuracy is within a certain range; TVS tube flow capacity can reach hundreds of amperes; in terms of voltage regulation value, TVS tube 6.8v-550V; voltage regulator tube : Clamping protection for drain and source; high accuracy; low surge current resistance of the Zener tube; stable 3.3v-75V of the Zener tube;

   The tvs tube and the Zener diode each have their own advantages and disadvantages. For more diode information and purchases, Pingshang Technology's official website https://electronic7.com will answer your questions 24 hours a day!