CMZ5920B BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	6.2V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	2 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 4V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA
Supplier Device Package:	SMA

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Introduction

The CMZ5920B BK is a Zener diode designed for voltage regulating applications. As the device is capable of guaranteeing a constant voltage from 5.1V to 25V, its most typical application fields include use in simple, low-cost voltage regulator circuits, as well as in overvoltage protection circuits. The CMZ5920B BK is a single-diode device. As such, it is comprised of a semiconductor junction with a P-type and an N-type region connected in series. The device works by providing a breakdown voltage, at which the current through the diode increases abruptly and the voltage across it remains almost constant. This breakdown voltage, along with the degree of temperature stability and reliability of the device, is determined by the distance between the two regions and the doping concentration.

Features

The CMZ5920B BK comes in a DO-41 type package and has a maximum current rating of 3A. It has a maximum surge power rating of 75W and a maximum Power dissipation of 30W. The device has a maximum peak reverse voltage of 30V and a maximum reverse breakdown voltage of 25V. The average forward current is 0.2mA and the thermal resistance is 310K/W. The CMZ5920B BK is designed for use in circuits where it can protect against excessive currents, voltages, and even overloads. Due the semiconductor junction in which it operates, the device ensures an almost constant voltage, within a given range, on either side of the diode. Furthermore, its superior temperature stability, low maximum working voltages, and low power dissipation also make it suitable for use in low-cost and straightforward voltage regulation applications.

Working Principle

The CMZ5920B BK operates using a basic, known principle: the so-called avalanche effect. In the diode, the depletion region between the two regions acts as an insulator, preventing the flow of current, except in the forward direction. When the applied voltage across the two regions reaches the PN junction breakdown voltage, also known as the reverse breakdown voltage, the current rapidly increases and increases exponentially. This breakdown voltage determines the voltage level that the diode works at. In the case of the CMZ5920B BK, the breakdown voltage is 25V. This means that the device works at this voltage level, regardless of the level of voltage applied to the diode. Thus, the CMZ5920B BK can guarantee a constant voltage output of 25V, within a given range. The device works by providing a breakdown voltage and therefore a constant voltage output. The device also has superior temperature stability, low working voltages, and low power consumption, which make it suitable for use in low-cost, low-power voltage regulation applications. Furthermore, it can also be used in overvoltage protection circuits, as it can guarantee a constant voltage output of 25V, regardless of the voltage applied to the PN junction.

Conclusion

The CMZ5920B BK is a single-diode device used in low-cost and straightforward voltage regulation applications, as well as in overvoltage protection circuits. The device operates using the avalanche effect, providing an almost constant output voltage, with superior temperature stability and low power dissipation. It has a maximum current rating of 3A, a maximum surge power rating of 75W, and a maximum peak reverse voltage of 30V. The average forward current is 0.2mA and the thermal resistance is 310K/W. All of these features make the CMZ5920B BK an ideal solution for use in low-cost, low-power voltage regulation applications.

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