Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	75V
Tolerance:	±20%
Power - Max:	1.5W
Impedance (Max) (Zzt):	140 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 56V
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:	1N5946

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Introduction

A 1N5946PE3/TR12 is a single Zener diode specifically designed for application and working principles, and the it is classified into Diodes - Zener - Single. The 1N5946PE3/TR12 diode is not only used for Zener operations, but for applications commonly found in electrical and electronic circuits.

Function and Applications of 1N5946PE3/TR12

The 1N5946PE3/TR12 is a point-contact pn-junction transistor device specially designed to provide feedback and feedback regulation. Since it has two different PNP and NPN areas, it can be used as a rectifier diode and voltage regulator. The working range is between 0.5 volts and 50 volts with reverse currents of 1 microamp up to 500 milliamp. It has a high efficiency in its operations that reduces power losses as well as keeps the device cool. One of the most common applications of the 1N5946PE3/TR12 diode is to provide voltage reference in audio amplifiers and radio circuits. When used as a Zener diode, the 1N5946PE3/TR12 provides a reference voltage for audio and radio circuits. This helps to reduce distortion, improve sound quality and maintain circuit stability. The 1N5946PE3/TR12 is used extensively in many of today\'s audio and radio amplifiers where it is used to stabilize the output power and provide improved sound.Another application of the 1N5946PE3/TR12 diode is for voltage limiting and surge protection. The diode can be used to protect electrical and electronic equipment from overload or other abnormal voltage conditions. This is done by connecting the diode across the load and if the load voltage exceeds a certain limit the diode will conduct and reduce the amount of current flowing through the load. Since the diode has a low forward voltage, it can also be used in power supply designs to limit the output voltage. The 1N5946PE3/TR12 diode is also commonly used as a shunt regulator and voltage regulator in switching power supplies and switching regulators. It is also used in electronic noise suppression as it helps to suppress the high frequency noise that can interfere with analog and digital circuits.

Working Principle

A 1N5946PE3/TR12 diode works on a principle known as Zener Break-down. This is where the diode conducts in reverse, allowing a current to pass through it when the voltage across it is decreased beyond its specific voltage limit. The diode acts as a voltage regulator by allowing a controlled amount of current pass through and in turn, the current is limited to a certain value, regardless of varying input voltage.The switching operation of the 1N5946PE3/TR12 diode happens at its normal voltage rating. If the input voltage to the diode is more than the rated limit, then the diode will start to let the current flow through with some voltage loss. This voltage loss will start reducing with the increase in the input voltage and this happens until it reaches the Zener Breakdown voltage (also known as Zener Voltage). At this point, the diode starts to conduct heavily and this heavy current draw helps to maintain the voltage output or the voltage across the diode without fluctuation.

Conclusion

A 1N5946PE3/TR12 is a single Zener diode specially designed for application and working principles and classified into Diodes - Zener - Single. It is commonly used as a point-contact pn-junction transistor device in a variety of electrical and electronic circuits. The 1N5946PE3/TR12 diode is used for Zener operations and for applications such as voltage reference, voltage limiting and surge protection, shunt regulator and voltage regulator, and electronic noise suppression. The diode works on a principle known as Zener Breakdown, which is where the diode conducts in reverse and allows the current to pass through it when the voltage is decreased beyond its specific voltage limit.

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