GDZ18B-E3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±4%
Power - Max:	200mW
Impedance (Max) (Zzt):	65 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 13V
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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When it comes to electronic components, one of the most important is the diode. A diode is an electronic part that enables current to flow in only one direction, either from the anode to the cathode, or vice versa. And one example of this type of diode is the Zener diode, which can help regulate the voltage on a circuit. The type of Zener diode we will be focusing on for this article is the GDZ18B-E3-18. It is a single Zener diode, meaning it has only two pieces of semiconductor material where the current can flow, the anode and the cathode. It is a 3 watt diode with a peak reverse power rating of 15 W and an 18 volt voltage breakdown. It has a maximum reverse current of 40 mA and a maximum forward current of 500 mA. It is also resistant to both AC and DC current and its case body is made up of plastic materials which helps it resist shock and vibration. Now that we have a brief understanding of what this diode is, let’s explore its application field and explain the working principle. The most common use of the GDZ18B-E3-18 single Zener diode is with power supplies. As mentioned, its main purpose is to regulate the voltage on a circuit. The way it does this is by creating a Zener barrier as the supply voltage becomes higher than the Zener voltage (18 V in this case) and all the current is forced to pass through the diode. When the supply voltage is lower than the Zener voltage, the power supply is blocked, maintaining the voltage the same even as the current supply changes. The basic working principle is that current is applied to the diode and it flows from the anode to the cathode. When the Zener voltage is reached, a voltage drop occurs in the diode, creating a Zener barrier. This barrier prevents current flow back in the opposite direction (from the cathode to the anode) which helps to regulate the voltage and protect any electronics connected to the power supply. The GDZ18B-E3-18 single Zener diode is a very useful electronic component that enables current to flow in only one direction and helps regulate the voltage on a circuit. It has many different uses and applications, most commonly being in power supplies, and is also resistant to both AC and DC current as well as shock and vibration. The basic concept behind its working principle is that it creates a Zener barrier when the supply voltage becomes higher than the Zener voltage and thus prevents current flow back in the opposite direction. All in all, the GDZ18B-E3-18 single Zener diode is a highly reliable and necessary electronic component with several distinct characteristics.

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