PLZ20B-G3/H Discrete Semiconductor Products

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The PLZ20B-G3/H is a single Zener diode that belongs to a range of single Zener diodes designed to prevent voltage surges. It is designed to provide reverse voltage protection in applications that require low capacitance, high temperature operation and high voltage protection. It is built using a high-performance GaAs, N-type substrate and a low capacitance, low-VF Schottky diode.

The device has a maximum Rectified Current rating of 20mA, a Zener Voltage of 40V, a junction Capacitance of 1.8pF, a Forward Voltage of less than 0.7V, and a Reverse Voltage rating of 5V. It has an operating temperature range of -55°C to 125°C, is available in a variety of surface-mount packages and has a maximum power dissipation rating of 1W.

The device\'s application field is mainly in high-impedance circuits such as small low-voltage electronics, where a small reverse-protection Zener is desired. It is also found in many electrical circuits such as alternating current (AC) power systems, automotive electronics, industrial computer systems, and telecommunications systems. The diode is often used in voltage stabilization circuits and protection circuits, as well as current-limited protection functions.

The operating principle of the PLZ20B-G3/H is that current is allowed to pass through the device in one direction (the forward direction) when the voltage across the device is below the Zener voltage. When the voltage across the device is greater than the Zener voltage, the current is blocked in the reverse direction. This behaviour allows the device to protect delicate electrical components from high voltages, including voltage transients and transients from inductive loads.

The PLZ20B-G3/H single Zener diode has a number of advantages over other similar devices, such as its low capacitance, high temperature operation and high voltage protection ability. It is also relatively simple to use and requires no external components other than the Zener diode itself. Additionally, the device is relatively small and lightweight, making it ideal for use in applications where board space is at a premium.

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