BAV21-TAP

Series:	Automotive, AEC-Q101
Packaging:	Tape & Box (TB)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	200V
Current - Average Rectified (Io):	250mA (DC)
Voltage - Forward (Vf) (Max) @ If:	1V @ 100mA
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	50ns
Current - Reverse Leakage @ Vr:	100nA @ 150V
Capacitance @ Vr, F:	1.5pF @ 0V, 1MHz
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35
Operating Temperature - Junction:	175°C (Max)

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Introduction
BAV21-TAP is a type of ultra-small and low-power single diode rectifier. The device utilizes a high-frequency thyristor and passes current through it with pulse power. This provides significant advantages over conventional single diode rectifiers, including reduced power consumption and improved efficiency. This makes it ideal for use in a variety of applications including automotive, computers, hand-held devices, lighting, and even portable electronic devices.

Features
BAV21-TAP offers a number of distinctive features and advantages over other kinds of rectifiers. Firstly, the device is frameless and has no need of resistance elements, resulting in reduced total system size. Furthermore, it has a virtually unlimited use temperature range of -65ºC to +150ºC. The rectifier offers a low forward voltage drop of only 0.350 volts and can sustain a blocking current of up to 8.0A. Lastly, its high-frequency switching capabilities maximize efficiency and reduce power dissipation.

Application Field
The BAV21-TAP is designed for various applications where ultra-small size, low power consumption, and high efficiency are essential. One such example is in automotive applications, where it can be used to protect various Integrated Circuits from overvoltage surges and also to provide circuits with power at very low input voltages. Because of its excellent forward and reverse blocking characteristics, it can be used to drive AC and DC loads and is also ideal for use in lighting applications like LED lights. The device can also be used in the telecommunications sector to protect calling equipment, to provide power to telephone lines and to switch phone line power. It is also suitable for use in battery-powered electronic devices, such as cellular phones, laptop computers, and other portable handheld devices. It can also be used in industrial applications cooling motor controllers, robotics controllers, and other electronic components.

Working Principles
Detailing the working principles of the BAV21-TAP requires understanding its internal components, which includes a thyristor, a gate, and a signal controller. The signal controller generates high frequency pulses which cause the thyristor to open and close. As the thyristor opens, current passes through the device and then passes through the signal controller, providing the device its low voltage drop. The signal controller also controls the gate voltage so that the device can switch between forward and reverse directions.

When the thyristor is open, the device is said to be in the forward cycle and current will flow from the anode to the cathode until the thyristor closes again. In reverse cycle, the signal controller will reverse the direction of the gate voltage, resulting in current flowing from the cathode to the anode. The signal controller will also control the duration of each cycle in order to maintain optimal power switching efficiency.

Conclusion
In conclusion, the BAV21-TAP is an ultra-small, low power consumption, and high efficiency rectifier ideal for a variety of applications. Its frameless design reduces total system size while its high-frequency switching capabilities improve efficiency and reduce power dissipation. It can also be used in automotive, computers, hand-held devices, lighting, and even portable electronic devices. Finally, the working principle of the device operates using a thyristor and signal controller in order to control and switch current in forward and reverse directions.

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