CMZ5919B BK

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	5.6V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	2 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 3V
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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CMZ5919B BK - Diodes - Zener - Single

A zener diode is a electronic component that is designed to have an indirectly reversible electrical behavior, meaning it can be used as a Voltage regulator and switching device. The CMZ5919B BK is a Zener diode designed to operate with a breakdown voltage of 5.9V. It provides both a stable voltage and good surge voltage protection. The CMZ5919B BK is a single component which has a technology that uses epitaxial planar resistors for improved temperature characteristics and low noise.

Applications

The CMZ5919B BK has many applications which include voltage regulation, surge protection, and reverse polarity protection in electronic systems. Its 5.9V breakdown voltage makes it ideal for use with common 5V logic operating systems, such as MCUs and processors. It also can be used in voltage protection circuits and switching supplies, such as those found in automotive, industrial, and aviation systems.

Working Principle

The CMZ5919B BK has three distinct regions within it: N-type, P-type and a middle region called the depletion region, which allows for current flow but with a resistance. The N-type and P-type regions are connected by a junction, where electrons (negative-charged particles) from the N-type region flow across the junction, creating a gap in the depletion region. Any voltage above the breakdown voltage will cause the gap to widen, allowing more electrons and current to flow.Under normal conditions, the electrons flowing through the gap in the depletion region produce a current, but with a resistance. When the voltage increases to the breakdown voltage, however, the depletion layer widens and the resistance decreases. This effect is known as the zener breakdown or zener diode effect. This effect is used to regulate the voltage and also protect against surges, as any voltage that exceeds the breakdown voltage is diverted to ground instead of entering the protected circuit.

Conclusion

The CMZ5919B BK is a zener diode designed to have a breakdown voltage of 5.9V. It is used for voltage regulation in many applications, including automotive, industrial, and aviation electronics. Its unique structure consisting of an N-type and P-type regions, a junction, and a depletion region allows for current flow with a resistance. When the voltage increases to the breakdown voltage, the depletion layer widens and the resistance decreases, providing surge protection.

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