FLZ27VA Discrete Semiconductor Products

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The FLZ27VA is a form of a single Zener diode, a type of diode that is designed to allow current to flow in one direction but to block the flow of current backward in the other direction. It is a voltage-dependent semiconductor device that is commonly used to provide a precise reference voltage in a power supply circuit. Zener diodes offer a bidirectional protection against overvoltage, with their breakdown voltage both forward- and reverse-biased.

This particular device operates over a temperature range from -55°C to 125°C and is housed in a SOD27 (Surface-Mount Small Outline Diode) package. It has a maximum reverse voltage of 27V, a peak reverse power rating of 500mW, a junction capacitance of 2.4pF, and a maximum forward voltage of 0.75V. The device also exhibits a breakdown voltage of 26 - 28V, with its type number reflecting the mid-point of that range.

The primary application for the FLZ27VA Zener diode is as an overvoltage protection device. It can be used to protect signal lines and internal components of an electronic circuit from being damaged due to unexpected excess voltage overloads. It also can be used to limit the output signal levels in audio and video circuits. Additionally, this device can be used as a voltage reference source in linear and switching power supplies, providing a stable, continuous voltage source.

The working principle of the FLZ27VA is fairly simple. When a negative voltage is applied externally, the diode will not allow current to flow in the reverse direction. As soon as the positive voltage reaches the rated breakdown voltage level, the diode becomes reverse-biased and current flows in the reverse direction. This reverse current reduces the voltage to the desired level to prevent any further damage to the circuit.

Upon reaching this reference level, the diode will maintain a constant voltage even if the external voltage increases. This allows the diode to act as a voltage regulator, providing a predictable, controlled voltage output and eliminating any shocks or spikes in voltage levels. This makes the FLZ27VA particularly useful for applications involving sensitive electronic components.

The FLZ27VA single Zener diode is an indispensable component in a variety of electronics applications. From providing overvoltage protection to acting as a voltage reference source, this diode plays an important role in helping protect sensitive electronics and providing a stable voltage output.

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