BZD27C18PHRHG

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	17.95V
Tolerance:	±6.4%
Power - Max:	1W
Impedance (Max) (Zzt):	15 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 13V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-55°C ~ 175°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-219AB
Supplier Device Package:	Sub SMA

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Introduction

The BZD27C18PHRHG is a single Zener diode commonly used for a variety of applications. It features two terminals for easy connection as well as allowing for features and benefits specific to its wide range of use. It is widely used in capacitors, linear and switching regulators, and electronic protection systems. This article will look at the application field and working principle of the BZD27C18PHRHG Zener diode.

Overview

The BZD27C18PHRHG is typically used as an anti-reverse protection device, as well as a switching element to pass a signal or voltage in one direction. It is also used to regulate power output in a variety of systems, as well as providing steady current flow. The BZD27C18PHRHG is an versatile diode that can be used as a clamping or restraining device, as an audio detector, or even in scientific instruments.The BZD27C18PHRHG Zener diode has a breakdown voltage of 27 V. The rated current is 10 mA and the power dissipation is 0.2 W. With a maximum surge current of 100 mA and junction temperature of 200 °C, this diode is a highly reliable device. The BZD27C18PHRHG has a response time of 0.1 µs and can switch from a "zero" to a "One" state without affecting the load current.

Application Field

The BZD27C18PHRHG offers a variety of uses and applications. At the most basic level, it can be used to protect various electrical systems from reverse voltages. When used in this fashion, it acts as a barrier between the power supply and the components it is protecting.The BZD27C18PHRHG can also be used to regulate high power output, providing a precise level of current or voltage. This is used in a variety of electric circuits, such as laser printers or loud speakers. The BZD27C18PHRHG can also be used as a clamping device, providing protection against large transients. Other applications of the BZD27C18PHRHG include the generation of precise pulses for frequency control, stablizing electric signals, and eliminating low-power noise generated in circuits. Its relatively low cost makes it a popular choice for many applications.

Working Principle

The BZD27C18PHRHG Zener diode works on the principle of Zener breakdown. When the voltage across the junction of a Zener diode exceeds its threshold rated value, a sudden rise of current occurs. This is referred to as the "Zener breakdown voltage". The current-voltage characteristics of the diode can be described as two back to back \'Z\' curves, with the junction breakdown voltage shown as the middle point.If the voltage across the diode is lower than its breakdown voltage, the diode behaves like a normal silicon diode and offers no special characteristics. However, when the applied voltage IP is greater than the breakdown voltage VB, the current starts to increase rapidly and the diode starts to show Zener effects. The Zener effect allows for a more efficient operation for a single diode than a diode bridge. It is ideal for applications wherein the device provides constant current even when the output voltage drops below the breakdown voltage. It can also be used to protect various components in a circuit from over-voltage or transients.

Conclusion

The BZD27C18PHRHG Zener diode is a versatile device that can be used for a variety of applications. The diode offers protection against reverse voltages, as well as providing stable current or voltage outputs. It is used in audio detection, switching and regulation, and scientific instruments. The Zener effect of the diode allows it to serve as an efficient anti-reverse protection device, while its relatively low cost makes it a popular choice for many applications.

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