Some Common Zener Diodes in Market today

 


Zener diodes are a specialized type of semiconductor diode designed to operate in the reverse breakdown region, where they maintain a constant voltage across their terminals. This unique characteristic makes them valuable in a variety of applications. They are available in various models, each with its own voltage rating, power handling capability, and package type.

Zener diode model numbers typically consist of a series of letters and numbers that convey important information about the component's specifications. The most common format for Zener diode model numbers is "BZX" or "1N," followed by a number that indicates the Zener voltage rating. For example, a Zener diode with a Zener voltage of 5.1 volts might be labeled as "BZX85C5V1" or "1N4733A."

The first part of the series, such as "BZX" or "1N," identifies the manufacturer or the standard used for the component. The following digits represent the Zener voltage rating in volts, often followed by a letter that denotes the tolerance level or other characteristics of the diode. For example, "BZX85C5V1" indicates a Zener diode with a Zener voltage of 5.1 volts and a tolerance level of ±5%.

 

Some Common Zener Diodes

 

BZX Series

BZX55C: This series includes diodes with voltage ratings ranging from 2.4 volts to 75 volts. They are commonly used in voltage regulation circuits and signal-limiting applications.

BZX85C: This series offers power ratings from 3.3 volts to 75 volts. They are available in various power dissipation ratings and package types, making them versatile for different applications.

BZX85B: Similar to the BZX85C series, they have power ratings from 2.4 volts to 75 volts. They are often used in low-power applications where space is limited.

BZX85A: This series includes energy ratings from 2.4 volts to 75 volts. They are suitable for applications requiring higher power dissipation.

 

1N Series

1N4728A to 1N4764A: These diodes have voltage ratings ranging from 3.3 volts to 100 volts. They are commonly used in voltage regulation circuits, surge protection, and signal-limiting applications.

1N5221B to 1N5267B: This series includes power ratings from 2.4 volts to 100 volts. They are suitable for low-power applications where space is limited.

 

Other Common Model Numbers

ZMM1V8 to ZMM75: These diodes are part of the ZMM series and have power ratings from 1.8 volts to 75 volts. They are often used in telecommunications and consumer electronics.

BZV55C to BZV85C: These diodes are part of the BZV series and have energy ratings from 2.4 volts to 75 volts. They are commonly used in voltage regulation circuits and signal-limiting applications.


Zener diodes are essential components in electronics, providing voltage regulation and protection in various circuits. Whether you're designing a voltage regulator or a surge protector, there's a Zener diode model suited to your needs.

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