AOZ8206DI-05 Circuit Protection

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TVS - Diodes

AOZ8206DI-05, otherwise known as the Automotive Grade Transient Voltage Suppressor (TVS) Diode, is a signal diode designed to protect automotive electronics from voltage transients generated through inductive switching of solenoids, relays, and other electronics. This diode is a two terminal component utilizing avalanche breakdown to limit transients.

Due to the hard-switching used in automotive applications, the AOZ8206DI-05 is designed to protect against voltage transients with a maximum breakdown voltage of 27V and holding voltage of 24V. Depending on the application, the diode can be utilized with a range of series resistance and capacitance in order to achieve the desired protection level.

Aside from its automotive application, the AOZ8206DI-05 is also useful in communications equipment, or in other areas where voltage transients due to inductive load switching may be present. It is particularly suitable for applications where a low breakdown voltage is desired, with a fast response time.

In terms of operating principle, the AOZ8206DI-05 works by utilizing a reverse biased voltage junction to conduct surge current while protecting the circuit from overvoltage. When a surge is detected, the junction breaks down and the voltage is clamped to a safe level until the surge passes. This breakdown is known as an avalanche breakdown. This type of diode is efficient in clamping quickly due to its lower capacitance when compared to other series of TVS diode.

In order to achieve the desired performance in the circuit, it is important to take into account the power dissipation of the device as the device dissipates more power when the voltage of the transient is in closer proximity to the rated working voltage. It is also important to take into account the frequency of the surge as higher surge frequency will require a higher surge current capability from the diode in order to provide the same level of protection.

In summation, the AOZ8206DI-05 is an automotive grade TVS diode capable of protecting automotive electronic circuits from overvoltage transients. Utilizing avalanche breakdown, the diode can efficiently clamps the voltage to a safe level, respective to the application design. The diode is of simple design and is suitable for applications with low breakdown voltage and fast response time.

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