Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	6.8V
Tolerance:	±20%
Power - Max:	3W
Impedance (Max) (Zzt):	2.5 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 5.2V
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:	1PMT5921

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Introduction

The 1PMT5921E3/TR13 is a type of single-diode Zener. It is made with silicon chips, and utilizes construction techniques, such as planar processing, that make it a reliable and efficient switch-mode power supply (SMPS) part. This article will take a closer look at the application field and working principle of the 1PMT5921E3/TR13.

Applications

The 1PMT5921E3/TR13 is an ideal part for many power management applications, such as those in telecommunications, post-processing audio and video, medical equipment, and military applications. The part is capable of operating up to a maximum temperature of +125°C and provides a strong ESD (electrostatic discharge) protection. Moreover, it offers improved forward voltage characteristics, and is suitable for input capacitor applications. The 1PMT5921E3/TR13 is also capable of high frequency operations with minimal noise. These features make the part suitable for high switching speeds in various SMPS applications. The standard breakdown voltage is 2V and a maximum reverse current of 2 mA. The device is RoHS compliant, so it can be used in a wide variety of safety-critical applications.

Working Principle

Zener diodes are a type of diode that operate based on the principle of avalanche breakdown. When an electric field is applied across the device, electron-hole pairs are created and the electric current increases. When the electric field reaches a certain level, the number of electron-hole pairs increases exponentially. This causes the current to reach a large level, which is known as avalanche breakdown. When the avalanche breakdown happens, it creates a high electric field across the device that is greater than the forward voltage drops. This causes the current to become relatively constant, even when the applied voltage changes. As a result, the voltage across the device remains relatively constant, and the current is determined by the resistance in the circuit.

Conclusion

The 1PMT5921E3/TR13 is a single-diode Zener that is suitable for use in many power management applications. It is capable of high frequency operations and provides a strong ESD protection. It is also RoHS compliant, so it can be used for safety-critical applications. The working principle of the device is based on the principle of avalanche breakdown. When the electric field reaches a certain level, the number of electron-hole pairs increases exponentially and the current reaches a large level. As a result, the voltage across the device remains relatively constant, and the current is determined by the resistance in the circuit.

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