2EZ4.3D/TR8

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	±20%
Power - Max:	2W
Impedance (Max) (Zzt):	4.5 Ohms
Current - Reverse Leakage @ Vr:	20µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-204AL (DO-41)
Base Part Number:	2EZ4V3

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Introduction

2EZ4.3D/TR8 is a singleZener diode designed to protectvoltage sensitive components from over-voltage conditionsby providing a path for current when the voltage hasexceeded a predetermined threshold. The 2EZ4.3D/TR8 features a low Forward Voltage Drop with a maximum of 0.6 volts at 1.0 amperes, giving greater protection for low voltage components. The 2EZ4.3D/TR8 also features a high thermal resistance, providing additional protection for sensitive circuit components.

Applications

The 2EZ4.3D/TR8 is typically used in circuits where over-voltage protection is required, including switching regulators and power supplies. The 2EZ4.3D/TR8 can also be used to limit inrush current when capacitors are charged after a power outage. The 2EZ4.3D/TR8 can be used in automotive and industrial applications, including motor controllers and motion control systems. It can also be used in power converter and communications systems, such as mobile phone base stations. The 2EZ4.3D/TR8 offers a fast response time, making it suitable for high speed switching applications. It also offers low noise operation and low burning characteristics, making it ideal for use in an EMI (Electro-Magnetic Interference) sensitive environment.

Working Principle

The 2EZ4.3D/TR8 operates on the principle of a breakdown voltage. This is the voltage at which the diode begins to conduct, allowing a current to flow. When the voltage reaches this threshold, the diode turns on, providing a path for the current. This prevents excessive voltage from building up and damaging the circuit. When the voltage drops below the breakdown voltage, the diode turns off, preventing any current from flowing. This is the equivalent of a switch that is flipped off. The 2EZ4.3D/TR8 has a low Forward Voltage Drop, meaning that the voltage required to turn on the diode is significantly lower than other diodes. This makes it ideal for circuits that require over-voltage protection but require a low voltage drop.

Conclusion

The 2EZ4.3D/TR8 is a single Zener diode designed to protect voltage sensitive components from over-voltage conditions by providing a path for current when the voltage has exceeded a predetermined threshold. The 2EZ4.3D/TR8 features a low Forward Voltage Drop with a maximum of 0.6 volts at 1.0 amperes, making it ideal for circuits that require over-voltage protection but require a low voltage drop. The 2EZ4.3D/TR8 is suitable for high speed switching applications and low noise operation, making it ideal for use in an EMI sensitive environment. It can be used in automotive and industrial applications, and is typically used in circuits where over-voltage protection is required, such as switching regulators and power supplies.

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