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BZX79B20 from PH

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BZX79B20

Manufacturer: PH

Voltage regulator diodes

Partnumber Manufacturer Quantity Availability
BZX79B20 PH 1300 In Stock

Description and Introduction

Voltage regulator diodes The **BZX79B20** is a widely used Zener diode designed for voltage regulation and protection in electronic circuits. As part of the BZX79 series, this component provides a stable reference voltage of **20V**, making it suitable for applications requiring precise voltage clamping or regulation.  

Zener diodes like the BZX79B20 operate in reverse-bias mode, maintaining a constant voltage drop across their terminals once the breakdown (Zener) voltage is reached. This characteristic makes them ideal for protecting sensitive components from voltage spikes or for stabilizing power supplies.  

The BZX79B20 features a **glass encapsulation** with axial leads, ensuring durability and ease of mounting on printed circuit boards (PCBs). With a **power dissipation rating of 500mW**, it is well-suited for low-power applications. Its compact design and reliable performance make it a common choice in consumer electronics, industrial controls, and automotive systems.  

Key specifications include a **tolerance of ±5%** on the nominal Zener voltage and a **leakage current** that remains minimal below the breakdown threshold. Engineers often incorporate the BZX79B20 in voltage reference circuits, surge protectors, and as part of voltage dividers where stability is critical.  

For optimal performance, proper heat management and current-limiting resistors should be considered to prevent overheating and ensure long-term reliability.

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