BZX84C20W-7

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Diodes - Zener - Single

A BZX84C20W-7 is a single Zener diode best suited for applications in which a low-leakage, general-purpose device is required. The device has a low capacitance and a low voltage drop that make it well suited for use in a variety of applications. It has a wide range of forward and reverse breakdown voltages and is ideal for protecting electronic equipment from power supply spikes, as well as for controlling the output of switching and linear regulators.

The BZX84C20W-7 is a bidirectional Zener diode that features an integrated Zener voltage regulator and voltage clamp for protection in applications with various nominal and transient power fluctuations. The device is a unidirectional device which, when reverse biased, provides a low impedance path that keeps the voltage across a load constant, independent of changes in the load current and input voltage. This allows the diode to serve as a transistor or fuse to protect against input voltage and load current going beyond the specified rated levels, such as in applications such as switch and linear regulation.

The device uses avalanche breakdown physics to protect against voltage and current overloads, and offers superior protection against high-energy transients. It has a low capacitance that makes it ideal for applications where the power rate or frequency is crucial, such as in audio amplifiers and linear regulators. The diode also offers a low forward voltage drop, making it suitable for high power applications.

The device also features a temperature coefficient and thermal hysteresis to provide reliable protection at various operating temperatures and to reduce EMI and RFI interference. The device is manufactured using a semiconductor chip process and is separated into two pieces, the cathode and the anode, with the Zener voltage regulator being built into the anode, while the voltage clamp is integrated into the cathode. The device also offers low parasitic capacitances, making it ideal for use in high-frequency applications.

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