BZX79-B3V3,133

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A diode is an electronic component that directs electric current in one direction while blocking it in the opposite direction. The BZX79-B3V3,133 is a type of single zener diode designed specifically for applications that require breakdown voltage regulation in the range of 3.299 volts. It has a low reverse leakage current and low noise, making it an ideal choice for use in the regulated power supply or amplifier. It is also excellent for use in battery-powered applications.

Design and Specifications

The BZX79-B3V3,133 is designed as an uni-directional device. It is constructed from a PN junction and silver diffused junction technology. It has an epoxy package and comes in a 1206 case size, which makes it small and discreet when used in circuit design. It comes with a maximum reverse operating voltage of 3.07 volts, a maximum of continuous forward current of 500mA, and a breakdown voltage of 3.299 Volts ± 0.09 V.

Working Principle

The working principle of the BZX79-B3V3,133 is fairly simple. When the voltage of its anode exceeds the breakdown voltage value (3.299 Volts), then the diode begins to conduct current. Consequently, the current produced is greater than the current that would occur naturally in the Reverse Breakdown region. This phenomenon is known as Zener breakdown. As a result, the excess current is limited by the resistor in the circuit acting as a current limiter. Also, due to the low reverse leakage current, it helps in maintaining constant voltage regulation.

Application Fields

The regulator in a power supply or amplifier usually requires a specific breakdown voltage for it to operate effectively. This is a task well suited for the BZX79-B3V3,133 single zener diode. Additionally, its low reverse leakage current makes it an ideal candidate for use in battery-powered applications.

It can also be used in noise filtering applications like low-frequency pulse generators, pulse generators, and electro-mechanical systems. It is also an important component in the circuit designs of switching power supplies and high-frequency converters. All that is needed is the addition of a small resistor in the circuit to act as a current limiter.

Conclusion

The BZX79-B3V3,133 is an excellent choice for applications that require voltage regulation. Its design, specifications, and working principle make it well equipped for use in power supplies or amplifiers, low-frequency pulse generators, noise filtering applications, electro-mechanical systems, switching power supplies and high-frequency converters.

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