DZ4J030K0R

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DZ4J030K0R application field and working principle

DZ4J030K0R is a device categorized under Diodes - Zener - Arrays, manufactured by Littelfuse. It is a four-terminal surface mount Schottky diode array, designed for bidirectional transient and ESD protection in a low profile package.The low capacitance of the DZ4J030K0R makes it suitable for protecting high speed data lines from switching transients in mobile and telecom applications. Its multitude of reverse rectification diodes connected in series can also be used to regulate voltages up to 40V, such as in high voltage DC-DC converters.

Working Principle

The DZ4J030K0R is based on the principle of Zener breakdown. In regular Zener diodes, this breakdown occurs at a certain reverse voltage which depends on the diode. In the DZ4J030K0R, a series of four parallel connected Zener diodes are employed for regulating the voltage between two pins. The voltage is limited to a maximum of 40V.When a voltage greater than 40V is applied across the two terminals, a current flows from the positive terminal to the negative terminal through the four parallel connected diodes. This current behaves like a ‘clamping’ current and the voltage across the two terminals is limited to approximately 40V.In a typical application, the DZ4J030K0R is placed between two power sources. With the appropriate voltage applied, the device acts as a clamp, or voltage regulator, to accommodate any transients or perturbations in the system. The addition of the diode array\'s multiple terminals makes it possible to monitor the levels of the incoming power signals.To sum up, the DZ4J030K0R is an innovative four-terminal surface-mount Schottky diode array, designed for bidirectional transient and ESD protection. It is capable of regulating voltages up to 40V and can be used to protect high-speed data lines from switching transients. Its four parallel connected Zener diodes enable it to act as a clamp or voltage regulator.

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