1N4746CP/TR12

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±2%
Power - Max:	1W
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 13.7V
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:	1N4746

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1N4746CP/TR12 Overview

1N4746CP/TR12 is a diode specifically designed for high-reliability applications. It is categorized as a type of single Zener Diode and is typically used to provide a fixed voltage path in electronic circuits. Its main working principle is to provide either rectified or regulated voltage to the circuit, depending on its circuit’s configuration. 

What is 1N4746CP/TR12 Used For?

1N4746CP/TR12 is commonly used in applications such as voltage regulation, linear voltage regulation, protection against overvoltage, protection against damaging reverse polarity, and many other applications. Additionally, it can be used in simplified ways for applications such as voltage boosting, reverse-polarity protection, and voltage references.

Applications of 1N4746CP/TR12

1N4746CP/TR12 is designed for high-reliability applications, making it well-suited to demanding environments that require long-term stability. It is often used for controlling the flow of current between power supplies and other circuits, providing either regulated or rectified voltage where desirable. It is commonly utilized in power management systems, reverse-polarity protection, LED protection, and transient-voltage suppression applications.

Advantages of 1N4746CP/TR12

1N4746CP/TR12 offers several advantages over other types of diodes that make it a popular choice for many applications. The most important of these advantages is its high-reliability; it is capable of withstanding extreme operating conditions, making it an ideal choice for applications that require long-term stability. Additionally, it has a wide operating range of -65°C to +175°C and a series of options for reverse leakage, forward voltage (VF) and dynamic impedance (Zzt).

Working principle of 1N4746CP/TR12

1N4746CP/TR12 works by exploiting the properties of a PN junction diode. In a normal diode, when a forward voltage is connected to the diode, majority carriers migrate from the N-type material to the P-type material, forming a potential barrier due to the depletion region. The PN junction diode effectively becomes a conducting path, allowing a current to flow. In the case of the 1N4746CP/TR12, it has a fixed voltage known as the Zener voltage, which is the voltage at which the diode suddenly turns on and conducts a large amount of current, with minimal change of resistivity. This Zener voltage may vary to a certain degree, depending on the particular type of diode. This allows the 1N4746CP/TR12 to regulate the voltage of a circuit, preventing overvoltage or reverse-polarity damage.

Conclusion

1N4746CP/TR12 is a high-reliability single zener diode designed for use in demanding applications that require long-term stability. It is commonly used for reverse-polarity protection, LED protection, voltage regulation, linear voltage regulation, and many other applications. Its main advantage is the high-reliability it offers, making it well-suited to extreme operating conditions. Its working principle is based on exploiting the properties of a PN junction diode, allowing it to regulate the voltage of a circuit and provide protection against overvoltage or reverse-polarity damage.

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