BAL99-HE3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	70V
Current - Average Rectified (Io):	250mA
Voltage - Forward (Vf) (Max) @ If:	1.25V @ 150mA
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	6ns
Current - Reverse Leakage @ Vr:	2.5µA @ 70V
Capacitance @ Vr, F:	1.5pF @ 0V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23
Operating Temperature - Junction:	-55°C ~ 150°C

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BAL99-HE3-18 Single Rectifier Diode

The BAL99-HE3-18 is a single rectifier diode designed for use in a variety of high-power applications. It is capable of high power rectifying up to 200A and is available in different voltages, including high-voltage models. Its extremely fast switching capability and low-maintenance make it suitable for use in a wide range of applications.

Application Fields

The BAL99-HE3-18 single rectifier diode is ideal for power conversion, high-speed switching, energy storage, and high current rectification in automotive applications. It is commonly used in power supply and converter applications, in particular for AC-DC and DC-DC (high frequency) conversion as well as buck and boost applications. This device is also suitable for inverters, UPS systems, arc welders, and lighting equipment.

Device Features

The BAL99-HE3-18 features low forward voltage drop, high forward surge capability and current handling capacity, fast reverse recovery, and soft reverse recovery characteristics. The device offers a variety of package options, including screw driver modules for ease of installation. It is available in a wide range of operating temperatures and can handle peak temperature up to 175°C. Furthermore, its surge voltage rating is higher than its DC blocking voltage, ideal for applications subject to high transient or surge voltages.

Working Principle

The BAL99-HE3-18 is a single rectifier diode that works on the principle of two p-n junctions. It has both a cathode and an anode. When the anode voltage is positive compared to the cathode voltage, the diode is forward biased and current flows through it. When the cathode voltage is positive compared to the anode, the diode is reverse biased, and no current flows through it.In operation, the BAL99-HE3-18 acts as a one-way valve, allowing current to flow in one direction, while blocking current flow in the opposite direction. This is accomplished by only allowing a forward voltage to be applied. This forward voltage, which is also known as the anode voltage, is supplied by an external source.When the anode voltage is applied, electrons travel from the anode to the cathode and current flows through the device. The electrons, upon reaching the cathode, are attracted away from the cathode and are accelerated back towards the anode by the external source. This process continues and creates a seemingly continuous current flow through the device.When the external source removes the anode voltage, the electrons stop flowing, and current flow through the device ceases. This is known as the reverse recovery or turn-off process. The device also has another state, known as the hard forward state, which is the state the diode is in when it is supplying current. The BAL99-HE3-18 has a very fast turn-off process, allowing it to respond quickly to external signals, making it ideal for high-speed switching applications.

Conclusion

The BAL99-HE3-18 is a single rectifier diode designed to handle high current, fast switching applications. It features low forward voltage drop, high surge handling capacity, and high temperature operation, making it suitable for a variety of power supply, conversion, and switching applications. It works on the principle of two p-n junctions, and is able to provide a one-way current flow with a high speed turn-off process.

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