BZX55C8V2

The BZX55C8V2 Zener diode is a device that offers a predictable exact breakdown voltage. It is generally used to provide a constant reference voltage in environments where a variety of power sources are present. It is a single-pole, double-throw (SPDT) switch device, meaning that it thoroughly isolates the power source. The BZX55C8V2 offers a temperature range of -65°C to +175°C and is made of a 5W gold metallized p-doped silicon body. The device has a low dynamic impedance and operates with a low reverse leakage current. This type of Zener diode is ideal for automotive, industrial, communication, and consumer electronics applications.

Application Field & Working Principle

The BZX55C8V2 is mainly used as a reference voltage device due to its low breakdown voltage. The device typically provides a stable, predictable voltage reference and offers a cost-effective solution for reference voltage applications. It is particularly beneficial when dealing with a wide range of power sources, as it will provide a stable reference without being affected by the fluctuations of the source. The device is well-suited to applications such as industrial, automotive, and communications, providing reliable voltage reference in these environments.

The working principle behind the BZX55C8V2 is quite simple as it operates like any other Zener diode. It has two active semiconductor junctions and is made of a p-doped silicon body. When a certain level of reverse bias is applied, the device’s resistance decreases and it no longer behaves like an ordinary diode — allowing a current to flow from anode to cathode. This current flow is called the Zener current and the voltage at which it flows is called the Zener voltage. The reference voltage provided by the BZX55C8V2 depends on the Zener voltage of the device.

The BZX55C8V2 also offers excellent temperature stability, meaning that it can maintain a consistent reference voltage over varying temperatures — even offering a temperature range of -65°C to +175°C. This ensures that the reference voltage stays constant regardless of the temperature of the environment. The device also operates with a low dynamic impedance, which helps reduce noise in signal circuits, and offers superior EMI/RFI protection.

Conclusion

The BZX55C8V2 is a reliable and cost-effective solution for voltage reference applications. It can provide a predictable exact breakdown voltage and maintain a consistent reference voltage over varying temperatures. The device offers excellent temperature stability, low dynamic impedance and superior EMI/RFI protection. The BZX55C8V2 is particularly well-suited for use in automotive, industrial and consumer electronics applications where a reliable reference voltage is required.