Diodes - Zener - Single

BZV55B4V7 is a single Zener diode, which features a high-grade epitaxial crystal planar Zener diode designed for use in a variety of applications such as voltage regulation, voltage limiting, noise suppression and surge voltage clamping. The diode has a maximum power dissipation of 500 mW, a reverse breakdown voltage of 4V and a Zener voltage tolerance of ±5%. It has a low thermal resistance and can withstand a wide range of temperatures, making it an ideal choice for applications that require reliable performance over a wide temperature range.

Application Field

BZV55B4V7 are used in a wide range of applications. The most common include voltage regulation, voltage limiting, noise suppression, surge voltage clamping and switching circuits. These Zener diodes can be used in both linear and switch-mode power supplies to regulate or limit voltage. They can also be used in many noise suppression circuits, especially in audio applications, to absorb transient spikes or surges that could damage the circuitry.

Another application for the BZV55B4V7 is in DC to DC converters, where they can be used as switching elements in both buck and boost converters to regulate output voltage. These diodes can also be used in current limiters to prevent circuits from being overloaded. And they are often found in automotive applications where they are used to regulate voltage and provide protection against transients.

Working Principle

The BZV55B4V7 is a Zener diode, which utilizes the Zener effect to provide voltage regulation. The Zener effect occurs when a current is passed through a PN junction in the reverse direction, which causes a depletion region to form. As a result, electrons are forced to cross the junction and form a potential barrier, also known as a “Zener voltage”. The Zener voltage is the voltage at which the current is able to flow from the PN junction, and it is typically a few volts higher than the forward voltage of the PN junction. By controlling the current, the Zener diode can regulate the voltage to a set point.

The BZV55B4V7 is a 4V Zener diode, meaning that it will regulate the voltage at 4V when the current is at a set point. With a Zener tolerance of ±5%, the actual voltage at which the diode regulates can vary from 3.8V to 4.2V. The power dissipation of this particular diode is 500mW, meaning that it can handle a maximum of 500mW before becoming damaged. As the power dissipation increases, however, the temperature of the diode will also increase, so it is important to ensure that the diode is kept cool in order to maximize its performance and reliability.

Conclusion

The BZV55B4V7 is a versatile Zener diode, which can be used in a wide range of applications such as voltage regulation, voltage limiting, and noise suppression. The diode features a reverse breakdown voltage of 4V and a Zener voltage tolerance of ±5%, and it can withstand a wide temperature range, making it an ideal choice for applications that require reliable performance over a wide temperature range. The diode works by utilizing the Zener effect, allowing it to regulate voltage at a set point and absorb transient spikes or surges that could damage the circuitry. Therefore, the BZV55B4V7 is an excellent choice for any application that requires reliable voltage regulation or protection against transients.