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Chapter II : Diodes : Difference between TVS Diodes and Zener Diodes (1)

As shown in Fig. 2-6(a), a TVS diode (ESD protection diode) absorbs very high overvoltage in a short time and works so as not to apply excessive voltage to other semiconductor devices. On the other hand, as shown in Fig.2-6(b), a Zener diode clamps input voltage to a constant voltage and supplies clamped voltage to other semiconductor devices.
Thus, a TVS diode absorbs surge voltage to protect other semiconductor devices, whereas a Zener diode provides constant voltage to other semiconductor devices.

Usage of TVS diode/Usage of Zener diode

Fig. 2-6(a)  Usage of TVS diode

Fig. 2-6(b)  Usage of Zener diode

Chapter II : Diodes

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