BZV85-C39,133

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Introduction

BZV85-C39,133 is a single Zener diode, which is commonly used in electronic circuits for voltage regulation and clamping. It unidirectionally allows the current to pass through the diode from the anode to the cathode. The diode is categorised under the Single Zener diodes and has wide range of application fields.

Overview

The BZV85-C39,133 is a glass package with a colour band of reddish tint. It has a peak power dissipation of up to 1.3 watts and Vz voltage of 39.1 volts. The guaranteed Zener impedance is between 12 to 20 ohms at Izt maximum forward current. The diode has a wide ambient temperature range of -55 to +150°C. The diode is normally used in the circuits which require protection from surges, spikes, avalanche breakdown and reverse bias conditions.

Working Principle

When a reverse voltage is applied across the BZV85-C39,133 single Zener diode, it allows current to flow from cathode to the anode. This phenomenon is known as Zener breakdown. It is a result of the disruption of the covalent bonds between electrons and nuclei in the semiconductor material. At a certain reverse-bias voltage, the electronic energy levels of the semiconductor material change enough for electrons to escape and to cross the junction area. As the number of free electrons increases, the breakdown voltage becomes constant and the voltage across the diode remains constant.

The voltage regulation and protection of the BZV85-C39,133 diode is controlled by the Izt maximum forward current rating. This parameter is used to measure the maximum current level which the diode can handle, beyond which it fails to perform. The maximum forward current is largely dependent on the ambient temperature and the power consumed in the circuit.

Applications

The BZV85-C39,133 single Zener diode is mainly used in electronic circuits for protection and regulation purposes. The most common applications of the diode include:

• Surge protection: The diode is used in reverse bias for clamping of the voltage surges. It can tolerate high energy direct current pulses, which are used in certain applications like electroplating.
• Voltage regulation; the diode can be used in reverse bias for voltage regulation in circuits.
• Avalanche protection: It can also be used in series with a resistor in order to provide avalanche protection. The resistance in the circuit is used to limit the voltage in the circuit.
• Reverse bias protection: The diode can be used in reverse bias for protection of the circuit components. It helps to prevent damage to the components due to excessive voltage.

Conclusion

The BZV85-C39,133 is a single Zener diode, which is mainly used for voltage regulation and protection of electronic circuits. It is categorised under the Single Zener diodes class and unidirectionally allows the current to pass from the anode to the cathode. The diode is widely used for surge protection, voltage regulation, avalanche protection and reverse bias protection of electronic circuits.

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