GDZ27B-G3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	27V
Tolerance:	±4%
Power - Max:	200mW
Impedance (Max) (Zzt):	150 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 21V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SC-76, SOD-323
Supplier Device Package:	SOD-323

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Introduction to GDZ27B-G3-18

The GDZ27B-G3-18 is a Zener diode designed for fixed voltage regulation with a single element. It has a low leakage current, allowing it to provide reliable protection against over-voltage transients or static over-voltage conditions. Suited for many applications, the GDZ27B-G3-18 can be used to clamp over-voltage transients, to provide over-voltage protection for semiconductor devices, or as a voltage reference for power management applications.

Application Fields

The GDZ27B-G3-18 plays an essential role in many electronics applications. Due to its low leakage current, the GDZ27B-G3-18 is ideal for protecting sensitive electronics from over-voltage conditions, including voltages generated by lightning and sudden voltage transients. It can be used for clamps in TVS devices and for bringing the load on the power supply up to the right voltage. The GDZ27B-G3-18 can also be used as a voltage reference in power management applications. It serves to regulate the current supply and loads in switching regulator circuits. In DC/DC converters, Zener diodes prevent over-voltage conditions from occurring, and the GDZ27B-G3-18 is ideal for this role.

Working Principle

The key feature of the GDZ27B-G3-18 is its ability to function as a voltage regulator. When a voltage is applied across its terminals, the diode acts as an open switch, until the applied voltage reaches a certain threshold. Once the threshold is exceeded, the diode turns into a closed switch, allowing current to flow through. This means that the voltage supplied to the load becomes regulated and no longer changes with the input voltage. Thus, when an over-voltage condition is detected, the GDZ27B-G3-18 detects it, and turns into a closed switch, preventing the over-voltage transient from reaching the load. It is also used in switching regulators, to regulate the voltage supplied to the load.

Conclusion

The GDZ27B-G3-18 is a single element Zener diode designed to provide reliable over-voltage protection for a range of electronics applications. Suited for many applications, it can be used to clamp over-voltage transients, to provide over-voltage protection for semiconductor devices, or as a voltage reference for power management and switching regulator applications. Its low leakage current allows it to reliably regulate the voltage supplied to the load, and provide essential protection from dangerous over-voltage conditions.

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