BZG04-120-M3-18

Series:	BZG04-M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	150V
Tolerance:	--
Power - Max:	1.25W
Current - Reverse Leakage @ Vr:	5µA @ 120V
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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Diodes - Zener - Single

A BZG04-120-M3-18 is a type of Zener diode – a single type of diode – used in a variety of electronic circuits. It is commonly used in voltage regulation, polarity protection, lightning protection and signal clipping applications.Zener diodes, like other diodes, are two-terminal semiconductor devices that are designed to flow current in only one direction – from anode to cathode or from positive to negative. However, when exposed to a reverse voltage, Zener diodes will allow electrons to flow in the opposite direction, thus stabilizing the voltage.BZG04-120-M3-18 has a reverse breakdown voltage of 1.2V and a power dissipation of 250mW. This type of Zener diode is capable of operating over a wide range of temperatures (-55°C to +200°C).The BZG04-120-M3-18 is most commonly used in applications that require voltage regulation and has a variety of other uses, such as in circuits where signal clipping is desired, in polarity protection, and to limit overvoltage risks during lightning strikes.In voltage regulation applications, the Zener diode is used to maintain a constant voltage level, regardless of changes in current. This type of device works on the principle of impedance. The Zener diode acts as an impedance element, limiting the amount of current allowed through the diode. As the load current increases, the voltage across the diode will decrease until it reaches the Zener voltage (rbn) at which point the current will again stabilize.In signal clipping applications, the Zener diode is used to restrict the voltage to a certain level, allowing only signals below the Zener voltage to pass. This is useful in audio applications, for instance, where one may need to restrict the level of an analog signal to a certain level and attenuate any signals that exceed that level.In polarity protection applications, a Zener diode is used to protect against accidental reversal of the power supply. When power is applied to the circuit, the voltage across the diode will be equal to the Zener voltage, ensuring that the circuit is not damaged by reverse polarity supplies.Lastly, in lightning protection applications, the Zener diode is used to limit the voltage across components in a circuit. During a lightning strike, power surges can occur and damage sensitive components. The Zener diode protects the components by limiting the voltage level, thus preventing any damage from occurring.In conclusion, the BZG04-120-M3-18 is a type of Zener diode used in numerous applications, including voltage regulation, signal clipping, polarity protection, and lightning protection. It functions on the principle of impedance, and is capable of operating over a wide range of temperatures.

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