MM3Z18VST1 Discrete Semiconductor Products

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MM3Z18VST1 Application Field and Working Principle

Zener diodes are a type of semiconductor device that allow for electrical current to flow in one direction and are frequently employed in almost every power related circuit design. MM3Z18VST1 is a 600mW 2.4V precision Zener diode primarily used in power management circuits and voltage regulation. More specifically, it is applicable in circuits where a stabilised reference voltage is needed.

The MM3Z18VST1 has a maximum reverse voltage of 18V, minimum reverse voltage of 12V and a maximum power dissipation of 600mW. In addition, it can easily stand up to temperature environments ranging from -65°C to +150°C and is available in both surface mount and through-hole variants. It is an ideal component for a variety of applications such as switching power supplies, dc/dc converters and automotive electronics.

Working Principle

The underlying principle behind this diode is the concept of a constant voltage drop. When base-emitter forward bias is applied, electrons are pushed across the avalanche area, creating a separate region where the voltage across the device remains constant regardless of the applied current. This voltage is the Zener voltage, which is set by the doping concentration in the junction region.

In the case of the MM3Z18VST1, the Zener voltage is 2.4 Volts, meaning that it will always conduct a current of 2.4 Volts across the diode regardless of the applied current. This type of device is very useful for regulating voltage in power supply circuits, allowing for a much more efficient and stable power supply.

Characteristics

The MM3Z18VST1 diode features a reverse voltage breakdown rating of 18V and a maximum power dissipation of 600mW. It has an inrush current of 3 mA and a nominal Zener voltage of 2.4V. In addition, it has a reverse current rating of 2.4 mA and a maximum operating temperature of 150°C.

The device is capable of withstanding a wide range of temperatures and is specifically designed to remain stable and reliable under harsh conditions. It is also designed with high quality electrical and mechanical characteristics, including a high junction temperature, thermal management and a strong resistance to thermal shock.

Conclusion

The MM3Z18VST1 diode is a precision Zener diode capable of providing a stabilised reference voltage for power management and voltage regulation. It has a Zener voltage of 2.4V, a reverse voltage breakdown rating of 18V, and a maximum power dissipation rating of 600mW. With its wide temperature range and mechanical robustness, the diode is well-suited for a variety of industrial and automotive applications.

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