Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Diode Type:	Schottky
Voltage - DC Reverse (Vr) (Max):	30V
Current - Average Rectified (Io):	200mA (DC)
Voltage - Forward (Vf) (Max) @ If:	800mV @ 100mA
Speed:	Small Signal =
Reverse Recovery Time (trr):	5ns
Current - Reverse Leakage @ Vr:	2µA @ 25V
Capacitance @ Vr, F:	10pF @ 1V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23
Operating Temperature - Junction:	125°C (Max)

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Diodes - Rectifiers - Single

BAT54-HE3-18 Application Field and Working Principle

Diodes, or rectifiers, are electronic components that are made of semi-conductor material and are used to convert an AC (alternating current) signal into either a pure DC (direct current) signal, or to control the flow of current in an electrical circuit. The BAT54-HE3-18 is a single diode and is used in a variety of applications including switching and amplifying, as well as clipping and protection.The BAT54-HE3-18 is a single diode with a total capacitance of 0.35 picofarads. It is designed to handle currents of up to 30 amps with a peak forward surge current of up to 150 amps. The maximum repetitive peak reverse voltage is 18 volts, and the maximum forward voltage drop is 0.45 volts. The diode has a total power dissipation of 0.1 watts and an operating temperature range of -55°C to + 125°C. It is also rated with a storage temperature range of -55°C to +100°C.The operating principle of a single diode is based on its ability to conduct electric current in only one direction. When a voltage is applied across the diode’s terminals, it will conduct electricity in the direction of its negative pole. The resistance of the diode to current flow in the opposite direction is termed its “reverse bias”.The BAT54-HE3-18 diode has a low forward voltage drop and a fast switching time. This makes it suitable for high-frequency switching in power supplies, solid-state relays, and other applications.The diode is also suited for use in peak current limiting circuits, voltage spike suppression, and clipping operations. It can be used in circuits for clipping, clamping, and protection of digital logic circuits, as well as for controlling the intensity of light-emitting diodes (LEDs).In digital logic circuits, the BAT54-HE3-18 single diode is typically connected in series with each of the outputs from the digital logic circuit to enable operation at a greater speed and with less power dissipation. The diode can be used to prevent the voltage at the output of the digital logic circuit from increasing any further once it reaches a predetermined limit.In clipping operations, the single diode can be connected in either series or parallel with the input signals of the clipping circuit. The clipping circuit reduces the signal’s amplitude once it has exceeded a certain limit. This is beneficial as it prevents any false triggers due to excessively large input signals.The BAT54-HE3-18 single diode is also commonly used in peak current-limiting circuits. It is typically connected in series with a load to limit the peak current in the circuit. The diode is designed to allow only enough current to pass to its load to keep it operating properly at all times, hence preventing any damage to the equipment connected to it.To sum up, the BAT54-HE3-18 single diode is a versatile component with a range of applications. Its low forward voltage drop and fast switching time makes it suitable for power supplies, solid-state relays, digital logic circuits and other applications. The diode is also commonly used for clipping, clamping, and current-limiting purposes.

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