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MBRB1035HE3/81 Application Field and Working Principle

MBRB1035HE3/81 is a popular avalanche diode that belongs to the category of single rectifiers. Rectifiers are devices that use semiconductor materials to convert alternating current (AC) to direct current (DC). An avalanche diode uses avalanche pinch-off to create a breakdown region for reverse-biased operation (high-voltage spike) and low leakage current. This diode is widely used for various circuits, including power supply applications for both AC-DC and DC-DC conversion.

Overview of MBRB1035HE3/81

MBRB1035HE3/81 is a major brand of diodes made by STMicroelectronics. It is a shock-proof rectifier diode optimal for a number of different applications due to its versatility. It is widely used in the automotive industry and in electronic applications that require high voltage and current. This high-quality diode is capable of operating under very demanding conditions, making it suitable for a variety of applications.

The diode offers excellent performance in terms of reverse voltage, high current and power dissipation. It has a reverse voltage of 100V and a forward current between 800mA and 4A. It is also capable of withstanding an avalanche surge of more than 5kA. In addition, the diode has a low reverse leakage current and is capable of high-frequency switching at the turn-on and turn-off stages.

MBRB1035HE3/81 Applications

MBRB1035HE3/81 is used in a variety of applications due to its high-performance capabilities. It is commonly used in AC/DC power supplies, DC/DC converters, and voltage regulators for consumer electronics such as laptops, media players, and smartphones. It is also used in automotive applications such as electronic power steering and electronic fuel injectors. It is also used in motor control applications, such as motor drive and speed controllers.

This diode can also be used in high-efficiency rectification applications due to its low forward voltage drop and low reverse leakage current. It is used in a variety of power managing applications, such as lighting and power controllers, and in particular, it is used in power handling applications that require high performance such as motor starting circuits and electronic ballasts.

MBRB1035HE3/81 Working Principle

The working principle of MBRB1035HE3/81 is based on the avalanche breakdown phenomenon which occurs when the reverse blocking voltage reaches a certain level. The voltage of the breakdown area is determined by the composition of the semiconductor materials. When this voltage is exceeded, the barrier of the junction starts to break down, which creates a region of large electric field in the junction. The diode then starts to conduct as the electrons and holes start to accelerate and impact each other, resulting in current flow.

Once the avalanche breakdown has been initiated, the diode can operate with a reverse voltage up to its breakdown voltage. The current flow during this period is limited by the junction capacitance of the diode. This capacitance is reduced with the increasing reverse voltage and the current is limited to a maximum value set by the device designers. The voltage is then maintained until the reverse voltage drops below the breakdown voltage.

Conclusion

MBRB1035HE3/81 is a popular single rectifier diode used in a variety of power management applications. It is capable of operating under demanding conditions, which makes it ideal for a wide range of applications. The working principle of the diode is based on the avalanche breakdown phenomenon, whereby the diode conducts when the reverse voltage reaches a certain level.

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