1M120Z R0G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	120V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	550 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 91.2V
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-204AL (DO-41)

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Introduction

1M120Z R0G is a diode type Zener, and single device. This device can be used to prevent overvoltage damage of devices or circuits, as well as provide a regulated voltage source. In this article, I will discuss the application and working principle of 1M120Z R0G.

Application

1M120Z R0G is a single-state, power dissipation of 500 mW Zener diode, built on a standard SOT-223 package. This device can with stand surge or inverse polar voltage up to 400V reverse working voltage, maximizing equipment safety and reliability. It is suitable for consumer electronics, medical and other electronic industries, widely used in power and voltage stabilizing, voltage clamp, EMC, surge protection, and other applications. The 1M120Z R0G is able to provide low capacitance, low operating current and low forward voltage drop, maintaining a stable voltage output by operating within its current clamping range. This diode is also suitable for automotive grade, meeting the AEC-Q101 requirements for transient protection and high junction temperature stability. This makes 1M120Z R0G suitable for automotive applications and environments where high temperatures are expected.

Working Principle

The 1M120Z R0G is a Zener diode, which has two regions of voltage conduction, the Forward Voltage Region and the Zener Voltage Region. In the Forward Voltage Region, the current flow is proportional to the voltage across the diode, and it operates like a normal diode. However, the Zener Voltage Region is an ideal point at which the voltage across the diode is stable and independent of current, and the current can be well controlled. This is known as the Zener region. The Zener voltage of 1M120Z R0G is 8V. The device will start to work when the applied reverse voltage reaches 8V, and it can provide a regulated voltage output when the applied reverse voltage is between 8V and 400V.When the voltage across the diode is less than 8V, the diode is operating in the reverse bias region, and no current will flow. When the voltage across the diode is greater than 8V, it will forward bias and current will start flowing. When the voltage across the diode reaches a point known as the knee of the curve, the current flow becomes constant, regardless of the applied voltage. This point is also known as the Zener region of the curve, where the voltage is regulated and the current is well controlled. When the voltage across the diode is above the Zener region, the current will be constant and the voltage output will be regulated at 8V. In this way, the 1M120Z R0G can provide a regulated voltage output, even when the applied voltage is much higher than 8V.

Conclusion

The 1M120Z R0G is a single-state, power dissipation of 500 mW Zener diode, built on a standard SOT-223 package. This device can with stand surge or inverse polar voltage up to 400V reverse working voltage, maximizing equipment safety and reliability. It is suitable for consumer electronics, medical and other electronic industries, widely used in power and voltage stabilizing, voltage clamp, EMC, surge protection, and other applications. When the voltage across the diode is above 8V, the device will start to work and the voltage output will be regulated at 8V. In this way, the 1M120Z R0G can provide a regulated voltage output, even when the applied voltage is much higher than 8V.

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