PLZ24A-HG3/H

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	24V
Tolerance:	±2.5%
Power - Max:	500mW
Impedance (Max) (Zzt):	35 Ohms
Current - Reverse Leakage @ Vr:	200nA @ 19V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	150°C
Mounting Type:	Surface Mount
Package / Case:	DO-219AC
Supplier Device Package:	DO-219AC (microSMF)

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Application Field and Working Principle of PLZ24A-HG3/HIntroductionPLZ24A-HG3/H is a series of single zener diodes designed for high surge current with wide breakdown voltage range from 2.4V to 47V. This article will explain what is the application field and how it works.Application FieldThe PLZ24A-HG3/H series of diodes can be used in a wide range of applications. Generally, they can be used as protection elements in circuits. The breakdown voltage can be adjusted through different series of resistors and capacitors, so that regulation of power supply voltage is available. Besides, they are ideally suited for both stepper motor and DC motor control, which is a very popular application. Furthermore, they can also be used in AC/DC converters, constant current sources and surge suppressing.Working PrincipleThe operating principle of PLZ24A-HG3/H is based on the classic Zener break down effect (also called as avalanche effect). These diodes are normally connected in reverse bias mode. When a voltage in reverse bias above the specified zener breakdown voltage is applied, a conductive channel will start to be formed in the depletion region, at which moment the whole diode start to be operated as a voltage regulator.When the reverse bias voltage increases, so does the current through the diode. However, the voltage across the diode remains constant (equal to the breakdown voltage), so that the power supplies operate at a fixed voltage, no matter how the load varies. This can be suitable in applications requiring the voltage to remain constant, regardless of the current drawn.ConclusionIn conclusion, the PLZ24A-HG3/H series of single zener diodes can be used in many applications, such as protection elements in circuits, stepper motor and DC motor control, AC/DC converters, constant current sources and surge suppressing. The breakdown voltage can be adjusted accordingly, and the device can operate as a voltage regulator.

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