BZX384B20-G3-18

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Diodes - Zener - Single

The BZX384B20-G3-18 diode is a single Zener diode, specifically designed for use in applications critical to consumer safety. This zener diode is rated to withstand up to 20V of reverse voltage, with a current rating up to 500mA. The device is constructed in a SOD123 - plastic Surface-Mount device (SMD) package, with a very small footprint and good thermal resistance.

Application Field

The BZX384B20-G3-18 diode can be used in a variety of applications that require precise voltage regulation over wide temperature ranges and rapid transient response times. Examples include voltage reference circuits, over-voltage protection circuits, power supply circuits, automotive electronics, and audio/video equipment. It can also be used in military and industrial electronics to protect valuable equipment from unexpected voltage spikes.

Working Principle

The BZX384B20-G3-18 diode is a zener diode, which uses the reverse breakdown voltage of the p-n junction to regulate voltage in a circuit. This means that the zener diode acts as the reference voltage in a circuit and the applied voltage stays at that reference voltage regardless of the current load. This allows for precise voltage regulation and protection from over-voltage or voltage spikes.

The diode is rated at a reverse breakdown voltage of 20V, meaning that once the voltage exceeds this voltage, the diode will start to conduct in the reverse direction. As the voltage exceeds this voltage, the current across the diode will be limited to the rated current.

The BZX384B20-G3-18 diode also has a high voltage clamping threshold, meaning that it can effectively remove voltage spikes in the circuit. This is important in applications where reverse transient voltages are likely to occur.

Conclusion

The BZX384B20-G3-18 diode is a single Zener diode specifically designed for use in applications critical to consumer safety. It can be used in a variety of applications that require precise voltage regulation over wide temperature ranges and rapid transient response times, such as voltage reference circuits, over-voltage protection circuits, power supply circuits, automotive electronics, and audio/video equipment. The zener diode uses the reverse breakdown voltage of the p-n junction to regulate voltage in a circuit, providing a consistent voltage reference.

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