SZMMBZ5259BLT1G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	39V
Tolerance:	±5%
Power - Max:	225mW
Impedance (Max) (Zzt):	80 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 30V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)
Base Part Number:	MMBZ5259B

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Introduction

The SZMMBZ5259BLT1G is a single Zener diode in a SOD-323 small surface mountable package. It is widely used in various applications including power management solutions, voltage regulation circuits, battery protection circuits and consumer electronics applications.

Application fields

The SZMMBZ5259BLT1G is mainly used in electronic circuits for protection and voltage regulation. It can be used to provide constant voltage when the input voltage to the circuit varies with respect to temperature, frequency, or power supply voltages. It can also act as a “clamp”, providing overvoltage or overcurrent protection to the circuit.In addition, this diode can be used for voltage regulation in consumer electronics applications such as appliances and portable electronic devices. The Zener voltage is designed to provide up to 5.2V of stable voltage, allowing the device to supply a constant current to a circuit regardless of the fluctuations in the supply voltage.

Working principle

The SZMMBZ5259BLT1G is a single Zener diode. It is designed to provide a constant voltage (5.2V in this case) when the input voltage exceeds the Zener breakdown voltage. It works through a process known as Zener breakdown. When an electric field is applied across a Zener diode junction, due to the field-effect, electrons are able to tunnel through the depletion region and, as a result, current flows in the form of a thermal-generated avalanche breakdown. This process begins when the voltage across the diode exceeds the Zener breakdown voltage (Vz). Once the Zener breakdown voltage is exceeded, the Zener diode quickly regulates the voltage across the diode to a constant level equal to the Zener voltage (Vz). This process is referred to as Zener voltage regulation. This voltage regulation can be used to deliver a constant voltage regardless of the fluctuations in the supply voltage.

Conclusion

The SZMMBZ5259BLT1G is a single Zener diode that is commonly used in electronics for a variety of applications including power management solutions, voltage regulation circuits, battery protection circuits and consumer electronics applications. It works through a process known as Zener breakdown and is designed to provide a constant voltage (5.2V in this case) when the input voltage exceeds the Zener breakdown voltage (Vz). The Zener diode quickly regulates the voltage across the diode to a constant level equal to the Zener voltage (Vz). This constant voltage allows a variety of electronic circuits to maintain their desired performance in the presence of electrical noise or sudden changes in the supply voltage.

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