ZM4746A-GS18 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 13.7V
Operating Temperature:	175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF (Glass)
Supplier Device Package:	DO-213AB
Base Part Number:	ZM4746

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Introduction

The ZM4746A-GS18 is a single Zener diode that is usually used in power supply circuits and in signal circuits as an over-voltage protector. The diode’s low dropout voltage and over-voltage protection features make it a common go-to component. There is a wide range of applications where the ZM4746A-GS18 can be used, including automotive and consumer electronics.

What is a Zener Diode?

A Zener diode is a type of semiconductor device which is used as a voltage regulator, it is a two-terminal passive component. It is a type of diode which is specially designed to have a low breakdown voltage point. When the reverse bias voltage exceeds this voltage, the diode will start conducting, thus enabling it to function as a voltage regulator.

How Does it Work?

The ZM4746A-GS18 has a voltage breakdown point of 18V. When the voltage across the two terminals exceeds this value, the diode starts conducting. This effectively creates a voltage regulator as the applied voltage across the two terminals will be limited to 18V regardless of the actual voltage applied. This is because the diode will act as a resistive path for the circuit, limiting the applied voltage. Moreover, the reverse drop voltage (or the voltage drop across the diode when conducting) of the ZM4746A-GS18 is very low at just 0.2V. This means that the ZM4746A-GS18 is ideal for applications where a low voltage drop is required, such as in power supply circuits. It is also suitable for use in signal circuits where it can act as an over-voltage protector.

Applications

The ZM4746A-GS18 has a variety of applications where it provides an advantage over other types of diodes. The ZM4746A-GS18 makes a great choice for automotive applications where it can act as an over-voltage protector. The low dropout voltage of the ZM4746A-GS18 makes it suitable for use in sensitive circuits, as well as in power supplies. The diode can be used to provide protection against sudden spikes in voltage which could damage sensitive components. The ZM4746A-GS18 is also suitable for use in consumer electronics. The low reverse drop voltage of the ZM4746A-GS18 is perfect for power supply circuits, as it can ensure that the applied voltage is not affected by the diode itself. This makes the ZM4746A-GS18 ideal for powering devices such as phones and laptops. The ZM4746A-GS18 is also suitable for use in signal circuits. The diode’s over-voltage protection features can help provide protection against sudden spikes in voltage, protecting the circuit from damage.

Conclusion

The ZM4746A-GS18 is a high quality Zener diode that is suitable for use in a variety of applications. The diode’s low dropout voltage and over-voltage protection features make it a versatile component that can be used in automotive, consumer electronics, and signal circuits.

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