1N4746A-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
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 ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-41
Base Part Number:	1N4746

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.Introduction1N4746A-T is one of the most commonly used diodes, which is categorized as Zener diode, in the field of electronic components. 1N4746A-T is a single diode. It has a wide range of applications in electronic and electrical circuits, as it has several characteristics such as voltage regulation and temperature compensation. This article offers an overview on 1N4746A-T and its application field and working principle. Application Field1N4746A-T is used for diverse applications in the fields of power supplies, audio and video, TV and other equipment, communication, computer and automobile fields and so on. It is the preferred choice for DC voltage regulation, battery clippers and current limiters in portable devices, such as computers and mobile phones. In power supply systems, 1N4746A-T is widely used as a voltage regulator in power conversion units. It is used for providing a stabilized output voltage, as well as preventing voltage fluctuations. In Audio and video equipments, 1N4746A-T is used in the power modules that drives the amplifiers or speakers. It is also widely used in TV broadcasting system and other communication equipments, such as routers, modems and servers. In automobiles, 1N4746A-T is widely used as an intelligent power switch to control the power supply input/output in automobile control boards. Similarly, it is also used in sources of automotive computers, as a voltage regulator. 1N4746A-T is also used as part of the oscillator circuits in computer motherboard, to regulate the output voltage of the system. To summarize, 1N4746A-T is mostly used for the purpose of DC voltage regulation and current limiting in various fields. The application of 1N4746A-T varies in different fields, depending on the device and the corresponding circuit. Working PrincipleThe 1N4746A-T is a three-terminal device, consisting of an N-type layer, a silicon diode, and a P-type layer. The three layers are connected in a manner to create a broken PN junction. This PN junction serves a key purpose in voltage regulation, by recovering a low voltage input to a constant output voltage, regardless of the value of the input voltage. When a given input current is applied to 1N4746A-T, the potential at the junction of the diode increases while the voltage at the other two junction points decrease. As such, a constant output voltage is generated, irrespective of the potential across the two junction points. The ability of the 1N4746A-T to regulate a constant output voltage is further enhanced by its temperature compensation characteristics. The temperature coefficient of the 1N4746A-T ensures that the device remains stable in a given temperature range. This implies that the 1N4746A-T is able to maintain a constant output voltage even in high temperature and varying input voltage conditions.Conclusion1N4746A-T diode is one of the most commonly used devices in electronic and electrical circuits. It is categorized as a Zener diode and is mostly used for DC voltage regulation and current limiting. The device has a wide range of applications in power and voltage management, audio, video, television and communication equipments, computer boards, and vehicles. It works on the principle of PN junction, providing a constant output voltage despite changing input voltages. 1N4746A-T also has temperature compensation characteristics, further enhancing its ability to provide a stable output voltage.

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