Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	200V
Tolerance:	±20%
Power - Max:	3W
Impedance (Max) (Zzt):	1200 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 152V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-216AA
Supplier Device Package:	DO-216AA
Base Part Number:	1PMT5956

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1PMT5956E3/TR7 Zener Diode Application Field and Working Principle

Introduction

Zener diodes have been widely used in electrical circuits due to their ability to regulate voltages and currents. 1PMT5956E3/TR7 is a 1 watt surface mount Zener diode from ON Semiconductor. It has a wide range of applications such as voltage regulators, voltage clamping, reverse-bias protection, and surge absorption. This article aims to introduce the application fields and working principle of 1PMT5956E3/TR7.

Application Fields

1PMT5956E3/TR7 has a wide range of applications in various industries.

Voltage Regulators

1PMT5956E3/TR7 Zener diodes can be used as voltage regulators in electrical circuits to regulate the input and output voltages. It is mainly used in applications requiring constant voltage and current, such as DC-DC converters, AC-DC power supplies, and motor control applications.

Voltage Clamping

1PMT5956E3/TR7 Zener diodes can also be used for voltage clamping, which is the process of limiting the voltage peak and voltage droop of a power supply system. By clamping the output voltage, it is possible to maintain a constant voltage even with large changes in the input voltage.

Reverse-Bias Protection

1PMT5956E3/TR7 Zener diodes can also be used as reverse-bias protection devices. Since Zener diodes have a lower breakdown voltage than ordinary diodes, they can protect sensitive components from voltage spikes caused by sudden changes in the input voltage.

Surge Absorption

1PMT5956E3/TR7 Zener diodes can also be used to absorb transient surges that can otherwise disrupt the normal operation of electrical circuits. By absorbing the surge energy and preventing it from entering the circuit, the voltage and current in the system remain stable.

Working Principle

1PMT5956E3/TR7 Zener diodes use the Zener Effect, which is the process in which a voltage across an electric junction is reduced by the occurrence of an avalanche current through the junction. The avalanche current starts when the electric field across the diode is greater than the breakdown voltage. This causes the electrons to be accelerated to a high velocity and collide with the lattice structure, creating more free electrons and holes. These free electrons and holes then recombine and create more electrons and holes, resulting in an avalanche current.When a Zener diode is reverse biased, the electric field across it increases. When the electric field across the Zener exceeds the breakdown voltage, the Zener begins to conduct current, resulting in a reduced voltage across the diode. This reduces the voltage drop across the diode, thus providing voltage regulation for the circuit.

Conclusion

1PMT5956E3/TR7 Zener Diode is a 1 watt surface mount diode from ON Semiconductor with wide range of applications in industries such as voltage regulators, voltage clamping, reverse-bias protection, and surge absorption. Its working principle is based on the Zener effect, which is the process in which a voltage across an electric junction is reduced by the occurrence of an avalanche current through the junction. This article has introduced the application fields and working principle of 1PMT5956E3/TR7.

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