VLZ27C-GS18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	26.29V
Tolerance:	--
Power - Max:	500mW
Impedance (Max) (Zzt):	45 Ohms
Current - Reverse Leakage @ Vr:	40µA @ 24.3V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	SOD-80 Variant
Supplier Device Package:	SOD-80 QuadroMELF

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Introduction

The VLZ27C-GS18 is a single Zener diode specifically designed for use in rectification and voltage regulation applications. It consists of two series-connected diodes mounted in the same package, with one attached to the anode and the other to the cathode of their respective diode. This innovative design enables the Zener diode to provide superior rectification and regulation performance when compared to other Zener devices.

Application Field

The VLZ27C-GS18 is designed to be used in a variety of applications. It is used in Vin circuits to provide overvoltage protection, in reverse voltage applications to protect circuits from voltage spikes and surges, in regulator circuits to maintain the voltage at a predetermined level, in power supplies to provide the required output voltage, and in many other applications requiring Zener diode functionality.

Working Principle

The VLZ27C-GS18 works on the same principle as other Zener diodes in that it operates by rectification and voltage regulation. The Zener diode has two terminals, the anode and the cathode. When the anode is connected to the voltage supply, electrons flow in from the supply and fill the holes of the P-type material of the anode. When a breakdown voltage is reached, the electrons are released from the junction and a current is created in the opposite direction. This current flows through the external circuit, creating an arc that stabilizes the current across the diode. If the voltage drops below the Zener voltage, the electrons are pushed back across the junction and the current is turned off, thereby allowing the Zener diode to provide protection from reverse voltage.The voltage regulation element of the VLZ27C-GS18 ensures that a voltage drop does not reduce the current flow below the breakdown voltage. When the voltage drops, the reverse current will allow electrons to accumulate across the junction, forcing the current to flow slowly through the external circuit, providing the necessary voltage regulation. This allows the VLZ27C-GS18 to provide accurate voltage regulation and ensures that the voltage does not exceed the maximum set-point.

Conclusion

The VLZ27C-GS18 is an innovative Zener diode designed for application in various rectification and voltage regulation applications. Through the combination of rectification and voltage regulation, the VLZ27C-GS18 allows users to ensure that voltage spikes and drops are managed efficiently, ensuring the safety and performance of their circuits. As such, the VLZ27C-GS18 is the perfect choice for any application requiring reliable voltage control.

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