Series:	Automotive, AEC-Q101, BZG04-M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	11V
Tolerance:	--
Power - Max:	1.25W
Current - Reverse Leakage @ Vr:	5µA @ 9.1V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 500mA
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)

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BZG04-9V1-HM3-18 Application Field and Working Principle

BZG04-9V1-HM3-18 is a single Zener diode manufactured by Vishay. It is a component used for controlling and regulating voltages in electronic circuits. To understand its application field and working principle, we must first think about what a Zener diode is and what it does. A Zener diode is a type of diode designed to operate in reverse-biased. It has a low voltage breakdown voltage, and when it is connected to a circuit with more voltage than its breakdown voltage, it will conduct current in reverse. This causes the diode to act like a clamp and limit the voltage in the circuit to the breakdown voltage, even with an increasing input voltage. BZG04-9V1-HM3-18 is a single Zener diode used mainly as a low-voltage voltage regulator. It is rated for a voltage of 9V, with a nominal power dissipation of 500mW. The diode has a maximum reverse voltage of 9V, with a maximum forward current of 5mA. It has a reverse leakage current of 2µA at 9V, and a Capacitance of 5pF at 1V.A single Zener diode like BZG04-9V1-HM3-18 is typically used in applications where the voltage needs to be regulated, such as in power supplies and voltage dividers. It can also be used in other applications where it is necessary to keep a certain level of voltage, such as in over-voltage protection circuits. To understand how BZG04-9V1-HM3-18 works it is important to remember that it is designed to operate in reverse-biased. This means that it will only pass current in reverse, and only when the voltage across it is greater than its breakdown voltage. It acts like a clamp, limiting the voltage in the circuit to its breakdown voltage, even as the input voltage increases. For example, if we assume that the input voltage is 12V and the Zener diode has a breakdown voltage of 9V, then the diode will conduct current in reverse and limit the output voltage to 9V. This can be used in many scenarios, such as in power supplies and voltage dividers, where the voltage needs to be regulated and kept stable. In conclusion, BZG04-9V1-HM3-18 is a single Zener diode used primarily as a low-voltage voltage regulator. It can be used in various applications such as power supplies, voltage dividers, and over-voltage protection circuits. The diode works by limiting the voltage across it to its breakdown voltage, even as the input voltage increases.

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