MMBZ5245B-7-F Application Field and Working Principle

MMBZ5245B-7-F is a single zener diode manufactured by ON Semiconductor. This zener diode has a shatterproof case, a low and reproducible zener voltage, and a low reverse leakage current. The MMBZ5245B-7-F is suitable for applications such as voltage regulation and switching, and is available in a variety of packages and configurations including axial, surface mount, and leadless.

Applications

MMBZ5245B-7-F diodes are recommended for use as voltage reference diodes in applications such as voltage regulation and switching, as well as to protect circuits from overvoltage transients. The low and reproducible zener voltage, low reverse leakage current, and shatterproof case make this zener diode ideal for these types of applications, especially when used in parallel with a switching system.

The MMBZ5245B-7-F is also suitable for automotive, consumer, and industrial applications, where it can be used for voltage regulation, filter capacitor discharge, and Li-ion cell balancing.

Working Principle

The MMBZ5245B-7-F is a single zener diode that operates according to the Shockley diode equation: I = I0 exp ((V+/Vz) - 1), where I0 is the reverse saturation current, V+ is the applied voltage, and Vz is the user-defined zener voltage.

When an MMBZ5245B-7-F diode is forward biased, current flows through the diode. When the applied voltage reaches the zener voltage, the diode changes its operating mode, preventing any additional voltage from passing through the circuit.

This change in operating mode indicates that the zener diode is functioning as a voltage regulator and provides a constant voltage to the load. This voltage is usually referred to as the zener voltage and is usually chosen by the user.

In addition, when the MMBZ5245B-7-F is reverse biased, it blocks any current from passing through the circuit, a characteristic of all zener diodes. This makes the MMBZ5245B-7-F suitable for applications such as voltage regulation and switching.

Conclusion

The MMBZ5245B-7-F is a single zener diode manufactured by ON Semiconductor. It has a shatterproof case, a low and reproducible zener voltage, and a low reverse leakage current, making it suitable for automotive, consumer, and industrial applications. The working principle of the MMBZ5245B-7-F is based on the Shockley diode equation and it can be used for voltage regulation and filtering, Li-ion cell balancing, and protection from overvoltage transients.