RB021VAM90TR Discrete Semiconductor Products

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Diodes have unique properties that make them useful in a wide range of applications. The RB021VAM90TR is a rectifier diode that is used to convert alternating current (AC) to direct current (DC). This diode is often used in power supplies, voltage regulator modules, and even in power converters. In this article, we will discuss the application field and working principle of the RB021VAM90TR.

Application Field

The RB021VAM90TR rectifier diode is a high- temperature, low-voltage silicon junction diode developed and manufactured by ROHM Semiconductor. This Rectifier diode can handle a maximum current of 10A and a peak repetitive reverse voltage of 900V. This makes it a suitable choice for applications like power supply units, voltage regulator modules, and power converters.

This diode can also be used in rectification, i.e., the transformation of alternating current (AC) to direct current (DC). This diode has a high junction capacitance which helps it operate at high frequencies, making it a suitable choice for high frequency applications like magnetron drives, motor control circuits, and power converters.

Working Principle

The RB021VAM90TR is an unidirectional semiconductor device, meaning that it only allows current to flow in one direction (from anode to cathode). This is due to its junction structure, which allows current to flow in one direction but not the other. When AC voltage is applied to the diode, it acts like a conditional switch, only allowing current to pass when the anode (positive) voltage is greater than the cathode (negative) voltage.

When the voltage drops below a certain threshold, the diode no longer passes current and becomes an open circuit. This process is known as "reverse-biased", and it is the principle that makes rectification possible. The RB021VAM90TR is able to handle high voltage and current, making it a suitable choice for rectification.

In sum, the RB021VAM90TR is a high-temperature, low-voltage silicon junction diode that can handle up to 10A of current and 900V of peak reverse voltage. It is primarily used in power supplies, voltage regulators, and power converters, and works by converting AC voltage to DC through a process known as reverse-biased rectification. As such, the RB021VAM90TR is a reliable and efficient rectifier diode.

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