1N4732ATA

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	4.7V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	8 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	200°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-41

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The 1N4732A is an axial-lead, medium power, closely-regulated zener diode. It has a wide range of uses in many circuits. This article will discuss the application fields of the 1N4732A, as well as its working principle.1N4732A Application FieldsThe 1N4732A is considered a medium power zener diode, and is typically used in applications such as:• Voltage regulators• Linear voltage regulators• Resistor divider networks• Voltage references• Load dump protection• Transient voltage protection• Voltage surge protection• Voltage spike protection• Over-voltage protection• Motor controls• Voltage surge absorbers• ESD protection• Low-voltage stepper motor driving• RPM motor drivingSince the 1N4732A is a medium power zener diode, it is typically used in applications with power levels in the range of a few milliwatts to a few hundred milliwatts. Therefore, it is not typically used in higher power applications, where power levels exceed a few hundred milliwatts.1N4732A Working PrincipleThe 1N4732A is a voltage-regulating diode. It is designed to provide close regulation of voltages in a wide range of applications. The device consists of a PN junction that is reverse biased when operating in its zero power dissipation state. When a voltage greater than its zener breakdown voltage is applied to the diode, it allows current to flow through the device and regulate the voltage. This current is known as the zener current, and it is controlled so that it does not exceed a specified value, ensuring that the zener diode does not become damaged.The zener voltage, also known as the zener breakdown voltage, is the voltage at which the zener diode begins to break down and allow electrical current to flow. The optimum zener breakdown voltage of the 1N4732A ranges from 5.1V to 9.1V.ConclusionThe 1N4732A is a medium power axial-lead, closely-regulated zener diode. It has many uses in different applications, such as voltage regulators, voltage references, voltage surge protection, and motor control. The device’s working principle is based on a PN junction that is reverse biased until a voltage greater than its zener breakdown voltage is applied to the diode, at which point it allows current to flow and regulate the voltage. This current is kept close to a specified value to prevent the zener diode from becoming damaged.

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