1SMA4746HM2G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
Power - Max:	1.25W
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 13.7V
Operating Temperature:	-55°C ~ 175°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	DO-214AC (SMA)

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< strong >1SMA4746HM2G is a type of diode which comes into the category of Zener single. It is a type of diode which serves to regulate the voltage. It is constructed of a p-n junction diode which has been specifically designed for constant reverse voltages for the purpose of maintaining the voltage regulation. The maximum power dissipation of 1SMA4746HM2G is up to 500 milliwatts and the reverse voltage for which it is designed for is 6.2 to 68 volts. The Zener diodes offer a great degree of noise immunity in the range of 6.2 to 56 volts.

< strong >Applications of 1SMA4746HM2G

• It is widely used in high frequency switching regulators, DC-DC converters, voltage regulators, harmonic stabilizers, high stability power supplies and AC power supplies.
• It is also used in high frequency modules and uninterruptible power supply.
• This diode is employed in the circuit designs which require reliable control of low voltage voltage levels.
• 1SMA4746HM2G is used in many current and voltage control circuits like timers, temperature controllers, voltage references, amplifier circuits and waveform generators.
• It is quite suitable for a power conditioning application where a high degree of noise immunity is required.

Working Principle of 1SMA4746HM2G1SMA4746HM2G is a general-purpose Zener diode designed for use in applications where it is necessary to control and protect equipment from the risks of overvoltage. In standard operation, the diode acts as an open circuit between the input and output until a certain reverse voltage is applied which results in a sudden increase of current through the diode. This current is limited by the application of a suitable series resistance, and as the current flow increases the voltage across it becomes equal to the breakdown voltage of the diode. The current supplied by this diode is not so high and hence it is used in those applications which require limited current. This makes it suitable for switching and noise immunity in the circuits.The Zener diodes also performs reverse process of protecting the circuits and equipment from excessive voltage, such as positive voltage spikes. This is done by dissipating the excess energy through a controlled amount of current flow across the diode. This helps to protect the components and also helps in maintaining regulated voltage. In conclusion, 1SMA4746HM2G is an ideal diode for use in applications where reliable control of low voltage voltages and a high degree of noise immunity is required. It is widely used in various current, voltage control and power conditioning applications. It provides reliable protection from the risks of overvoltage, and efficient voltage regulation for many different types of circuits, modules and equipment.

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