GDZ7V5B-HG3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	7.5V
Tolerance:	±2%
Power - Max:	200mW
Impedance (Max) (Zzt):	30 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 4V
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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The GDZ7V5B-HG3-18 is a single-zener diode from NXP semi-conductor family. It is a high-performance zener diode designed for many applications. With a wide reverse breakdown voltage range from seven to sixty volts, and a current rating of 1.0 milliamp, it is suitable for a variety of uses.Application field
The GDZ7V5B-HG3-18 is useful for protecting circuits from excessive voltage and current fluctuations. Its low leakage current and fast clamping speed make it especially suited for surge protection in voltage sensitive applications such as computer systems and communications systems. It can also be used to regulate a voltage or current in a circuit, and as an element in voltage or current-controlled switches.Working principle
The GDZ7V5B-HG3-18 works on a principle called \'reverse breakdown.\' As a circuit component, it has two terminals or \'leads\': the anode, which is connected to the higher voltage, and the cathode, which is connected to the lower voltage. When a forward current is supplied to the diode, the current flows from the anode to the cathode. When the reverse voltage reaches a certain level, however, the diode\'s electric field breaks down and current is forced through the diode in the opposite direction, from cathode to anode. This reverse current is called \'reverse breakdown current\' and it is this current that allows the diode to be used for protecting circuits from excessive voltage and current fluctuations. It is also this current which can be used to regulate the voltage or current in a circuit. For the GDZ7V5B-HG3-18, when a voltage higher than 7V is applied to the anode, the reverse breakdown current between the anode and cathode will start to increase dramatically. Once the voltage exceeds 60V, the clamping level of the GDZ7V5B-HG3-18 will be reached, preventing further increases in the reverse breakdown current. The current rating of the GDZ7V5B-HG3-18 is 1 milliamp and it is recommended that this should not be exceeded. When used to regulate the voltage or current in a circuit, the GDZ7V5B-HG3-18 works on the principle of voltage division. The diode is connected in series with a resistor, and the combination then has a voltage across it. The value of the resistor determines what voltage will appear across the diode. This can be used to control the voltage or current in a circuit.Conclusion
The GDZ7V5B-HG3-18 is a single-zener diode from the NXP semi-conductor family. Its wide reverse breakdown voltage range and 1.0 milliamp current rating make it suitable for a variety of applications, such as surge protection in voltage sensitive applications, regulating a voltage or current, and as an element in voltage or current-controlled switches. It works on the principle of reverse breakdown and, when connected in series with a resistor, can be used to control the voltage or current in a circuit.

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