3EZ47D10/TR12

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	47V
Tolerance:	±10%
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 3EZ47D10/TR12 is a type of Zener diode manufactured for specific applications requiring high voltage, low current reverse voltage protection or breakdown operation in power supply circuits. This device is often used in communications, industrial, and instrumentation equipment. The 3EZ47D10/TR12 is made up of a silicon PN junction, a substrate line, and a P-type silicon body. It is designed to provide an accurately regulated output that is proportional to the input voltage.

Application Field

The 3EZ47D10/TR12 is specifically designed for use in low voltage, low current applications. It has a high breakdown voltage of 40.2 V and a low leakage current, which makes it ideal for protection against overvoltages and other surge conditions. It can be used for a variety of applications, including power supply circuits and overvoltage protection for bus lines, consumer appliances, and instrumentation equipment. This device can also be used in low voltage audio and video system components, such as amplifiers, voltage regulators, and ethernet transceivers.

Working Principle

The 3EZ47D10/TR12 works with a two-stage operation mechanism. In the first stage, it acts as a normal PN junction diode and stops current from flowing from the anode to the cathode. When the voltage across the diode exceeds its breakdown voltage, the second stage of operation occurs. This is the avalanche breakdown, in which electrons bridge the depletion region and allow current to pass. This current across the Zener diode is much greater than that of a standard PN junction diode, allowing it to act as a voltage regulator. This allows it to maintain a regulated output proportional to the input voltage.

Conclusion

The 3EZ47D10/TR12 is a type of Zener diode designed specifically for low-voltage, low-current applications. The two-stage operation of the diode allows it to act as both a protection device and a voltage regulator, providing a precisely regulated output proportional to the input voltage. This makes it an ideal solution for power supplies, audio/video equipment, and overvoltage protection for instrumentation and consumer appliances.

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