EDZVFHT2R5.1B Discrete Semiconductor Products

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Introduction

The EDZVFHT2R5.1B is a single Zener diode used in a variety of applications including voltage regulation, voltage clamping, and overvoltage protection. It is often used as an inexpensive alternative to expensive active devices for simple linear regulation.

Application Field

The EDZVFHT2R5.1B can be used for voltage regulation, voltage clamping and overvoltage protection. It is commonly used to regulate the output DC voltage from the AC line and is able to provide accurate control in both static line regulation and dynamic regulation applications. When used in voltage regulation applications, the zener diode serves as a reference for the regulating circuit to maintain the desired output voltage regardless of load variations.

Another popular application of the EDZVFHT2R5.1B is voltage clamping. The Zener diode can be used to limit the maximum output voltage of a source to a pre-determined level regardless of line or load variations. This can be useful in systems such as line power supplies, where unstable input line voltage can lead to overvoltage and consequently, damage to valuable components.

Finally, the EDZVFHT2R5.1B can be used for overvoltage protection. It can be connected in series with the output line of a circuit and will limit the maximum voltage to a predetermined level. This can provide a layer of reliable protection against unexpected high line voltages that could otherwise potentially damage sensitive components.

Working Principle

The EDZVFHT2R5.1B operates on the principle of Zener effects. This occurs when a diode is operated in reverse bias. When the reverse bias voltage is greater than a certain level, the diode will break down and enter into a state of avalanche breakdown. In this state, the diode allows current to flow through it, allowing for the regulation of voltage.

The current limiting characteristics of the EDZVFHT2R5.1B are determined by its Zener voltage, Vz. This is the voltage at which the diode starts to conduct with a specified current (typically 10mA or 20mA). When the reverse biased voltage across the diode is greater than Vz, current will begin to flow through the diode and the voltage will begin to drop as the current increases. The temperature coefficient of Vz determines the temperature stability of the Zener diode.

Conclusion

In conclusion, the EDZVFHT2R5.1B is a single Zener diode commonly used in applications such as voltage regulation, voltage clamping and overvoltage protection. It operates on the principle of Zener effects, where a diode operates in reverse bias and allows a certain current to flow through it when the reverse biased voltage is greater than a certain level. Its temperature stability is determined by its Zener voltage and temperature coefficient.

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