3EZ47D2/TR12

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	47V
Tolerance:	±2%
Power - Max:	3W
Impedance (Max) (Zzt):	38 Ohms
Current - Reverse Leakage @ Vr:	500nA @ 35.6V
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:	3EZ47

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Introduction

The 3EZ47D2/TR12 is a Zener diode belonging to the Single diodes category. Zener diodes, or simply Zeners, are types of semiconductor devices used to regulate voltage on the part of their terminals that are connected to power sources. Unlike other diodes, these conduct current in both directions and provide stable electrical characteristics of resistance and breakdown voltage. Hence, a single Zener diode can be classified as a two-way diode that works mainly as a regulator of voltage. The purpose of this article is to discuss the application fields and working principle of the 3EZ47D2/TR12 Zener diode.

Application Field

The 3EZ47D2/TR12 is a 5.1 V single Zener diode with a power rating of 500 mW. It is mainly utilized in instances where an energy efficient, low noise and high stability Zener diode is required. It is a useful component for applications such as voltage regulators, battery eliminators and other AC/DC circuits.In particular, the 3EZ47D2/TR12 is well suited for current limiting, rectifying and other low voltage applications involving high accuracy voltage regulators. It can also be used for protecting sensitive devices from overvoltage and spikes and for producing stable, low noise supplies for sensitive devices.

Working Principle

The 3EZ47D2/TR12 Zener diode uses a semiconductor junction barrier to control the voltage that is supplied from the terminals of the device when a reverse-biased junction is present. This reverse biased junction is present when a voltage greater than the Zener voltage (Vz) is applied to the diode. Once the voltage exceeds the reverse breakdown voltage of the diode, the reverse current increases exponentially as the voltage applied increases, meaning that more current flow can be allowed once the breakdown voltage is reached. This breakdown voltage is indicated by the Vz option.In order to achieve the required current and voltage stability, the construction of the 3EZ47D2/TR12 Zener diode is composed of many individual rectifying layers. These layers allocate the correct electric field over the whole device, which allows to control the voltage and current.In conclusion, the 3EZ47D2/TR12 is an energy efficient, low noise and high stability Zener diode mainly used for a variety of AC/DC circuits, current limiting, rectifying and other low voltage applications. When the reverse biased junction is excited and the voltage applied is above the breakdown voltage, the 3EZ47D2/TR12 Zener diode is capable of holding a stable voltage and delivering a constant current.

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