1N4679 BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	2V
Tolerance:	±5%
Power - Max:	500mW
Current - Reverse Leakage @ Vr:	5µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 100mA
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35

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Introduction

1N4679 BK is a Zener Diode, which is a type of diode that functions differently from other general purpose diodes. It does not allow current to flow in the opposite direction, but establishes a volt-amperes relation for current passing in one direction. The voltage across the diode is maintained at a constant value when the given reverse voltage is constant. This is often referred to as breakdown voltage or Zener voltage become it can be measured precisely. Zener diodes are widely used for the regulation of power supplies, voltage reference and replacement of the traditional voltage regulator circuits in industry.

Working Principle

1N4679 BK Zener diodes work with the same principle as general purpose diodes. A general purpose diode is commonly called as a rectifier diode, which is made up of two layers of semiconductor material. The two layers are the anode and cathode, with the anode being more negatively charged than the cathode. A Zener Diode is thus the same as a regular diode however with the addition of a small pinch of impurities, boron, or indium, which is included in the semiconductor material to give it breakdown or avalanche properties.When the external voltage applied on a regular diode is less than the voltage burden, current will only able to flow in one direction. However, when voltage applied on a Zener diode is greater than the breakdown voltage, current will flow in the reverse direction. In this state, Zener diodes can keep a constant voltage, regardless of the amount of the current passing through it.

Application Field

1N4679 BK Zener diodes are extensively used in many application fields. They are widely used as voltage detectors, rectifiers, voltage references, voltage regulator devices, and shunt regulators. In circuit designs, Zener diodes are used to limit the voltage applied to any part of a circuit, and this makes them a critical part of protection circuits. Zener diodes provide protection to devices, such as integrated circuits and transistors, from the malfunction and destruction caused by applications of high voltages. Zener diodes usually set up in the reverse bias mode.Besides, Zener diodes have a wide range of applications in medical, automotive, and radio-frequency identification (RFID) technology. In medical application, Zener diode is used for the purpose of sterilisation. Automotive uses such as for maintaining of the car battery charge and engine start up protection. Zener diodes too are used in RFID technology for providing a constant resistance to the operating frequency of invention in order to avoid interference from external signals. Zener diodes are also used in advanced touch pad application like smart door locks. In conclusion, 1N4679 BK Zener diode is a very efficient, cost-effective, and versatile component for many electronic applications, ranging from simple protection to more complex applications. Its main purpose is to direct current in one direction like a regular diode and also maintain a constant voltage in the opposite direction.

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