SMBJ4743A/TR13

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SMBJ4743A/TR13 is an unidirectional diode which belongs to the family of Zener diodes. As an unidirectional diode, it takes one mode of conduction, giving in only one direction while blocking in other. This diode is particularly designed to protect the circuits and components of sensitive equipments from voltage spikes or power surges, controlling the flow of current and reducing the overvoltage problems. SMBJ4743A/TR13 regulates the voltage and limits the current, thus protecting the circuit. This diode operates in a wide temperature range of -65° C to +175° C, withstanding voltages up to 600W.

The SMBJ4743A/TR13 diode is an ideal device to protect circuits from high voltage AC and DC power lines. It is typically used in power supplies and in circuits where electrostatic discharge and transients may occur. It is mainly employed for the purpose of protecting circuits from voltage spikes, lightning strike, and electrostatic waves.

In operation, the diode SMBJ4743A/TR13 works in two stages. In the first stage, when voltage increases, the threshold voltage of the forward conduction is reached for the diode to enter the on state. Then in the second stage, the diode junction starts to become non-linear and the current is limited within safe limits. During this process, the increased voltage is regulated by the protective diode, keeping both the devices and the circuitry safe.

Additionally, SMBJ4743A/TR13 diodes can also be used as voltage clamping devices in various applications like ICs, switched mode power supplies, monitors, and various other actuating circuits. It is suitable for a variety of digital and analogue circuits especially in automotive and telecommunication applications due to its compatibility with a wide range of systems.

In conclusion, the SMBJ4743A/TR13 diodes are ideal for providing protection to electronic equipment from overvoltage transients. The diodes absorb voltage spikes and limit the current as well as regulate voltage, thus offers superior overload and surge protection. It has a wide operating temperature range and is suitable for a variety of digital and analogue circuits.

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