The Voltage Regulator Diode BZT52C18 with Breakdown Voltage of 18V, Power Dissipation of 500mW and Low Reverse Current of 100nA at 12.6V

PublishTime： 2024-05-22 Article Source：SLKOR Official Website

The BZT52C18 is a popular Zener diode widely used in electronic circuits for voltage regulation and protection. With its specific characteristics, such as a breakdown voltage (V_ZTyp) of 18V, power dissipation (P_D) of 500mW, and a low reverse current (I_r) of 100nA at 12.6V, it offers reliable performance in various applications. This article aims to provide a comprehensive overview of the BZT52C18 Zener diode, its features, working principle and practical implementations.

SLKOR Voltage Regulator Diode BZT52C18 product photo

Understanding Zener Diodes:

Zener diodes are special types of diodes designed to operate in the reverse-biased mode. They exhibit a controlled breakdown under specified conditions, allowing them to maintain a constant voltage across their terminals. This makes them ideal for voltage regulation and protection against voltage spikes.

Slkor Voltage Regulator Diode BZT52C18 specification

Features and Specifications of BZT52C18:

The BZT52C18 Zener diode possesses the following key features and specifications:

Breakdown Voltage (V_ZTyp): The typical breakdown voltage of the BZT52C18 is 18V. It means that when the reverse voltage across the diode reaches or exceeds 18V, it starts conducting and maintains a relatively constant voltage drop.

Power Dissipation (P_D): The BZT52C18 can dissipate a maximum power of 500mW without getting damaged. It is essential to ensure that the power dissipation remains within this limit to prevent overheating and potential failure.

Low Reverse Current (I_r): The BZT52C18 exhibits a low reverse current of 100nA at 12.6V. This property ensures minimal leakage current when the diode is reverse-biased, contributing to its stability and efficiency.

Working Principle:

When the BZT52C18 Zener diode is reverse-biased below its breakdown voltage, it behaves like a regular diode with a negligible current flow. However, as the reverse voltage exceeds the breakdown voltage, the diode enters the breakdown region. In this region, it starts conducting and maintains a relatively constant voltage drop across its terminals, thus regulating the voltage.

Parameters of Slkor Voltage Regulator Diode BZT52C18

Practical Applications:

The BZT52C18 Zener diode finds extensive application in various electronic circuits, including but not limited to:

Voltage Regulation: It is commonly used as a voltage regulator to maintain a stable voltage level in power supplies, ensuring consistent performance of electronic components.

Overvoltage Protection: By diverting excessive voltage away from sensitive components, the BZT52C18 acts as a protective device, safeguarding circuits from damage caused by voltage spikes.

Voltage Reference: It can serve as a precise voltage reference in analog and digital circuits, facilitating accurate measurements and signal conditioning.

Conclusion:

The BZT52C18 Zener diode is an indispensable component in modern electronics, offering voltage regulation and protection capabilities. Its breakdown voltage of 18V, power dissipation of 500mW, and low reverse current of 100nA at 12.6V make it a reliable choice for a wide range of applications. By understanding its features, working principle, and practical implementations, engineers and hobbyists can effectively utilize the BZT52C18 Zener diode in their projects, ensuring stable and secure circuit operations.

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