Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Configuration:	2 Independent
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	±5%
Power - Max:	200mW
Impedance (Max) (Zzt):	22 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	6-TSSOP, SC-88, SOT-363
Supplier Device Package:	SOT-363
Base Part Number:	MMBZ5229BS

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Introduction

The MMBZ5229BS-7 is a Diodes – Zener – Arrays (D-Z-A) device for use in various electronic circuit applications. In this article, the application field and working principle of the device will be discussed.

What is a Diodes – Zener – Arrays?

D-Z-A is an advanced class of diode that consists of multiple Zener diodes connected in a series and/or parallel network. It uses the principle of voltage sharing and potential clamping in order to maintain the same voltage level across all the individual diodes in the network. The most common application of the D-Z-A is the protection of circuits against overvoltage and undervoltage.

Applications of the MMBZ5229BS-7

The MMBZ5229BS-7 can be used in a wide range of applications, such as overvoltage protection of low voltage equipment, overvoltage protection of automotive systems, circuit design for power supplies, ESD protection of ICs, protection of communication lines, regulation of control lines, and protection of displays and keypads. In addition, this device can also be used for voltage conversion, voltage level shifting, and temperature compensation.

Working Principle of the MMBZ5229BS-7

The MMBZ5229BS-7 operates on the same principle as any Zener diode, namely to hold a predetermined voltage level across its terminals. When the applied voltage is below the Zener breakdown voltage, the diode’s current is effectively zero. When the applied voltage is higher than the Zener breakdown voltage, the current through the device increases exponentially, allowing for a controlled regulation of the output voltage. This makes the MMBZ5229BS-7 ideal for over/under-voltage protection, voltage regulation, and voltage conversion in various electronic circuits.

Conclusion

The MMBZ5229BS-7 is a versatile device from the Diodes - Zener - Arrays family. It is commonly used for over/undervoltage protection, voltage level shifting, and voltage conversion. The device works on the same principle as any Zener diode, namely to maintain a predetermined voltage level across its terminals. This makes the MMBZ5229BS-7 a valuable asset in many digital and analog circuits.

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