✔ Tvs Diode Equivalent Circuit

Tvs Diode Equivalent Circuit

- July 23, 2019

A tvs diode has a junction that is optimized to absorb the high peak energy of a transient event while a standard zener diode is designed to clamp a steady state voltage. The ability to protect sensitive circuit parts from high transient voltages is the same function a tvs diode provides.

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An Introduction To Transient Voltage Suppressors Tvs

The measured impedance can be modeled by an equivalent circuit that consists of resistor r s inductor l s and capacitor c s connected in series.

Tvs diode equivalent circuit. Circuit protection tvs diodes are in stock at digikey. Under normal operating conditions the tvs diode presents a high impedance to the protected circuit but when the safe operating voltage of the protected circuit is exceeded the tvs diode operates in an avalanche mode providing a low impedance path to ground for the transient current. The impedance plot of a tvs avalanche diode is shown in fig.

Transient voltage suppressor tvs diode symbols. There are notable differences comparing a varistor vs tvs diode which we will be examining. Varistors are bidirectional components suitable for both ac and dc circuits.

Circuit protection ship same day. Unidirectional left and bidirectional right. R s is equal to the real portion of the complex impedance and is measured at the resonant frequency f r.

Theoretically the protection mechanism is straightforward. Although standard diodes and zener diodes can both be used for transient protection they are actually designed for rectification and voltage regulation and therefore are not as reliable or robust as transient voltage suppressor diodes.

Check Out The First 1500 W Tvs Diode In An Smb Flat Package