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Diodes - Rectifiers - Single - MBRH12035 Application Field and Working Principle

The MBRH12035 is part of the MBRH series of rectifier diodes from ON Semiconductor. Diodes within this series are typically double-junction, stud-mount rectifiers for high-voltage applications. This particular diode delivers high power, with a peak repetitive reverse voltage rating of up to 3500 V.

Application Field

As the MBRH12035 is designed for high-voltage applications, the most common application fields are motor control, power supply, power management, and power conversion applications. The rectifier diode can also be used in RF amplifiers, AC/DC converters, and motor drives.

The diode is most commonly used in motor drives where demanding switching speed and surge capability, as well as high dV/dt, are required. It can also be used in power supplies where it provides superior rectifying characteristics, enabling excellent efficiency and power quality.

The MBRH12035 is suitable for various home and shop appliances, cars, and any other applications requiring a high-performance rectifier diode.

Working Principle

A diode, in general, works utilizing the principle of electrical conduction; its output voltage depends on the bias direction of the forward-biased PN junction, which determines its direction of current conduction. To explain this, let’s look at the component’s components.

The PN junction of the MBRH12035 features electrodes which connect to a semiconductor material. This semiconductor material is divided into regions of P-type and N-type materials, which the electrodes connect to. When the appropriate voltage direction is applied, a potential barrier is formed, allowing the component to conduct current in one direction while resisting current in the other direction.

The MBRH12035 is a double-junction rectifier, meaning that it features two PN junctions in each component; one junction works as the anode and the other as the cathode. As current starts to flow, the diode\'s ability to conduct electrons is known as its forward voltage. The maximum forward voltage of the MBRH12035 depends on the particular application it is used for but is typically in the range of 1.5 to 2.0 V. Additionally, the reverse voltage indicates how much the current will decrease when the voltage crosses the ‘knee’ of its properties.

Conclusion

The MBRH12035 is a highly efficient, high-power double-junction rectifier diode for use in motor control, power management, and power conversion applications. It features two PN junctions that work together to conduct current in one direction while restraining current in the other direction. The diode can withstand reverse voltage of up to 3500 V and has a maximum forward voltage of 1.5 to 2.0 V.

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