PDZ27BZ

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As one of the most common diodes, the PDZ27BZ Zener diode is a type of diode designed to operate in the breakdown region to regulate voltage, or provide referenced voltage. It is a PN junction diode, connected back to back in one package, with the addition of an external current source in the middle. This component finds many applications in power supplies, voltage regulation, overvoltage protection and other precision circuits, as it forms the basis for many electronic components.

The PDZ27BZ component has a range of package options which include: DO-41, DO-214, SMA, and SOD-323 . This component has a rated current of 200mA for DO-41 package and 500mA for the other packages. It has a maximum reverse voltage of 27V, with a Zener Voltage of 24V, and a maximum Zener Impedance of 5Ω, with a maximum power dissipation of 500mW, 2W and 500mW respectively depending on the component\'s package.

PDZ27BZ has several UNAR characteristics, including predictable accuracy and superior thermal stability, as well as higher resistance to reverse leakage that is several orders of magnitude larger than other known commercial diodes. Additionally, this component has a wide range of operating temperature, better immunity for low bending radius, and a higher cut-off frequency with very low power losses in alternating current applications.

The PDZ27BZ diode works on the principle of avalanche breakdown or Zener breakdown. The avalanche breakdown is a result of the impact ionization property of the semiconductor materials. As the reverse bias voltage reaches a certain point, the electric field applied across the junction is strong enough to start impacting the valence electrons and cause them to detach from the atoms, while colliding and producing electron and hole pairs. This means that no matter how large a reverse current is drawn, the voltage remains the same. In contrast, the Zener breakdown material has a non-linear voltage-current relationship and the current increases exponentially across the junction.

This component is generally used for voltage regulation, ESD protection, OR-protection, shutdown modules, and current sensing circuits. One of the most common applications of PDZ27BZ is in power supply circuits. It is used in simplified power supplies where its breakdown voltage can be independently adjusted for many different voltages and currents. The circuit consists of a transformer rectifier, filter and PDZ27BZ to regulate the voltage. Since PDZ27BZ works as a constant current source, it maintains the output voltage even when the current changes. It also finds application in logic circuits and low power high frequency oscillator circuits, where it helps in producing very precise waveforms. It also finds application in peak limiting and wave shaping circuits.

PDZ27BZ is available in a variety of sizes and packages, which makes it suitable for almost any application. This component has a wide range of parameters and can be used to achieve a broad range of desired functions. It is a reliable and cost-effective component that finds application in many different types of circuits and systems. As a single Zener diode, it is an easy to use and efficient way to regulate and secure a consistent voltage in many applications.

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