BZT03D220-TAP Circuit Protection

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TVS - Diodes

A transient voltage suppressor diode, or TVS diode, is an electronic component designed to protect sensitive circuits from voltage spikes, such as electrostatic discharge (ESD), transients, voltage surges, and other over-voltage situations.

BZT03D220-TAP Application Field and Working Principle

The BZT03D220-TAP designed by STMicroelectronics is a unidirectional TVS diode for automotive applications. It is specifically designed for protecting circuits for automotive systems such as port ECU or electric vehicle application against ESD, EFT, and other transients. This component is rated for operating voltage of 20V and a peak pulse current of 220A. It has a low leakage current of less than 5uA and reverse stand-off voltage of 22V. It is also designed with transient suppression capability of 12V-pk on transients of up to 75A.

The working principle of the BZT03D220-TAP, or any other TVS diode, is similar for all applications. When the foreseen voltage surge crosses the specified threshold level, the device quickly switches from its nonconducting state to a low impedance, bidirectional conducting mode. This is known as “avalanching”, during which the connected load is safely protected by the clamping action of the TVS diode.

In the case of the BZT03D220-TAP, the remarkable attributes are the low leakage current and low stand-off voltage of 20V. This makes it ideal for applications that require high voltage protection. The TVS diode helps to absorb the specified voltage spike that would otherwise damage the connected components.

The BZT03D220-TAP can be found in other applications apart from automotive systems such as industrial, communication, and consumer electronics. Generally, this device can be used in any application where circuits require protection from high voltage spikes. It can be connected in series with a load, or in parallel with a load with a surge limiting resistor. Depending on the application, TVS diodes can be connected to data lines, power supply lines, or AC power lines.

In summary, with its low stand-off voltage and high peak pulse current, the BZT03D220-TAP can be used in various applications to protect sensitive components from voltage spikes, surges, and transients. It is not only reliable and robust, but it is also easy to integrate in different systems.

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