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Application field and working principle of BZV55C22

Introduction

BZV55C22 is a single zener diode, featuring a glass cylindrical through-hole package. The minimum breakdown voltage range is between 1.8V and 200V, operating at a temperature range of -55ºC to +125ºC. It is used in the stabilization of voltage, surge absorption and voltage clipping circuits in electronic circuits. The maximum power of the device is 400mW.

Peripheral conditions and requirements

• Operation temperature range: -55ºC to +125ºC
• Mounting conditions: Through-hole or surface mount
• Internal Working Voltage: 1.8V-200V
• Maximum Forward Voltage: 100V
• Maximum Power Dissipation: 400mW
• Polarity: Anode connected on left and cathode connected on right
• Maximum Forward Surge Current: 5Amps
• Typical Forward Voltage: 1.8V

Working principle

The working principle of the BZV55C22 is the same as all other Zener diodes. When the reverse voltage applied across the diode is above the Zener breakdown voltage, the diode thereby facilitates current conduction in the reverse direction. This, in turn, will cause the voltage drop down to the level of the breakdown voltage. This gated current when flows through the circuit, stabilizes the voltage.

The breakdown voltage of the BZV55C22 single zener diode can be calculated using the following formula,

Vz = Vz(room temp) + (T – 25ºC) x ΔV/ºC

Where Vz represents the breakdown voltage, Vz(room temp) is the breakdown voltage at room temperature, T is the temperature in ºC and ΔV/ºC is the temperature coefficient of the breakdown voltage.

Application field

The BZV55C22 single zener diode is used in a variety of applications in stabilization of voltage, surge absorption and voltage clipping circuits. Some of the applications of the BZV55C22 single zener diode are as follows:

• Line regulation of low-voltage power supplies
• Radio, television, personal computers and telecommunication equipment
• Lighting devices and automotive industry
• It is also used in testing instrument, battery chargers, transducers and labelling equipment

Conclusion

The BZV55C22 is a single zener diode from 1.8V to 200V, and is ideally used for voltage stabilization devices in a wide range of applications like lightening devices, personal computers and telecommunication equipment. Its temperature range falls between -55ºC to +125ºC and its maximum power dissipation ranges up to 400mW. The minimum breakdown voltage as well as the thermal coefficient of the breakdown voltage is calculated using the given formula.

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