1N2974BE3

Series:	--
Part Status:	Active
Voltage - Zener (Nom) (Vz):	10V
Tolerance:	±5%
Power - Max:	10W
Impedance (Max) (Zzt):	3 Ohms
Current - Reverse Leakage @ Vr:	25µA @ 7.6V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 2A
Operating Temperature:	-65°C ~ 175°C (TJ)
Mounting Type:	Stud Mount
Package / Case:	DO-203AA, DO-4, Stud
Supplier Device Package:	DO-203AA (DO-4)

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1N2974BE3 is a 1.4W power Zener diode, which is categorized under Diodes - Zener - Single. It has a nominal working voltage of 5.6V but also tolerates an operating temperature of -55 to 150 Celsius. It is also equipped with a built-in temperature protection circuit so that when it reaches an over operating temperature, the current flow is reduced to avoid damage to the diode. The 1N2974BE3 provides a wide range of applications, such as voltage regulation in power supplies, voltage references, voltage clippers, and voltage limiters, among others. It is specifically tailored to meet the needs of power converters, switching power supplies, portable computers, and other electro-mechanical controls. It is also used in automotive, industrial, and communication equipment. In order to understand the working principle of the 1N2974BE3, it is important to first understand the basic principles of a Zener diode. A Zener diode is a semiconductor device that allows electric current to flow in either one direction, or in both directions depending on the applied voltage. When a forward voltage is applied to the diode, a small leakage current flows. This current is called the Zener current and it is the current responsible for the Zener diode’s function. When the reverse voltage applied to the diode exceeds the Zener voltage, the Zener diode becomes forward-biased and begins to conduct. As the voltage increases further, the Zener current increases exponentially, as does the device’s dissipation power. Thus, the 1N2974BE3 can be used to both maintain a consistent voltage, and regulate high current in power supplies. In addition to the traditional Zener diode functions, the 1N2974BE3 is also equipped with a built-in temperature protection circuit. This circuit helps to maintain a consistent voltage by reducing its current flow when it reaches an over-temperature. This is done via a combined p-type and n-type junction, which helps to reduce the overall dissipated power. Furthermore, this temperature protection feature will help to maximize the device\'s lifespan and performance. In conclusion, the 1N2974BE3 can be classified as a 1.4W power Zener diode and is categorized under Diodes - Zener - Single. It is widely used in various applications such as voltage regulation in power supplies, voltage references, voltage clippers, and voltage limiters. It is also equipped with a built-in temperature protection circuit to ensure that it can operate at its optimal level.

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