CZRF20VB-HF

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Diodes - Zener - Single

The CZRF20VB-HF is an axial leaded, surface mountable Zener diode with an Ultra Low capacitance. It features a high power dissipation at 75mW with a five percent typical tolerance, a nominal working voltage of 20V and a maximum voltage of 22V. It has a working temperature rang of -55C to +125C, making it ideal for applications with extreme temperature fluctuations such as those found in automotive environments.

The CZRF20VB-HF is mainly used for protecting against transient overvoltages in electrical circuits, providing regulated voltage and offering bidirectional transient voltage protection. This can be used in automobile electronics to avoid overvoltage, as well as in communications equipment, automotive electronics, high-density mounting circuits and AC power boards.

A Zener diode operates on the principle that when a reverse-bias voltage is applied to an p-n junction the current flowing through the diode is nearly zero; this results in the diode appearing to be an open circuit to current. When the voltage is increased beyond a certain point, the p-n junction breaks down and current starts to flow in the reverse direction.

The breakdown voltage of the CZRF20VB-HF is 20V and has a reverse leakage of 800nA at 10V. The CZRF20VB-HF can handle up to 75mW of power and does not require additional components for operation, making it an ideal single diode for voltage protection of transistors and integrated circuits, providing protection from transient overvoltage spikes.

The CZRF20VB-HF is a popular choice for applications that need reliable transient voltage protection and is highly recommended for automotive electronic applications, such as power window relays, ignition systems, and anti-lock brakes, which all require stable voltage even during extreme temperature fluctuations.

To conclude, the CZRF20VB-HF is a surface mountable Zener diode that offers protection to electrical circuits, but also enables regulation of DC voltage. It has a reverse leakage of 800nA at 10V and can handle a maximum power dissipation of 75mW, and operate over a wide temperature range. It is typically used in applications with extreme temperature fluctuations and is an ideal single diode solution for protecting transistors and integrated circuits from transient overvoltage and providing voltage regulation in automobile electronics.

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