MM3Z12VST1G

The MM3Z12VST1G is a Zener diode manufactured by ON Semiconductor, designed for voltage regulation and protection applications. Here’s a detailed description of its key features and specifications:

General Description:

The MM3Z12VST1G is a surface-mount Zener diode that provides a stable reference voltage of 12 volts. It is part of the MM3Z series, which includes various Zener diodes with different voltage ratings. This component is particularly useful in applications requiring voltage clamping, transient voltage suppression, and voltage regulation.

Package:

• Type: SOT-23
• Dimensions: The SOT-23 package is compact, making it suitable for space-constrained applications. The typical dimensions are approximately 2.9 mm x 1.3 mm x 1.1 mm.
• Mounting: Surface mount technology (SMT) allows for automated assembly and is ideal for modern PCB designs.

Electrical Characteristics:

• Zener Voltage (Vz): 12V at a test current (Iz) of 5 mA.
• Zener Impedance (Zz): Typically around 5 ohms at 5 mA, indicating low resistance and good regulation.
• Reverse Leakage Current (Ir): Typically 1 µA at 12V, which is low, ensuring minimal power loss during operation.
• Power Dissipation (Pd): Maximum power dissipation is 500 mW, allowing it to handle significant power without overheating.
• Temperature Coefficient: The temperature coefficient is typically around -2.2 mV/°C, which indicates how the Zener voltage changes with temperature.

Applications:

The MM3Z12VST1G is suitable for various applications, including:

• Voltage regulation in power supplies.
• Protection circuits for sensitive electronic components against overvoltage conditions.
• Reference voltage sources in analog circuits.
• Clamping applications in signal lines to prevent voltage spikes.

Reliability and Compliance:

• The diode is designed to meet various industry standards for reliability and performance.
• It is RoHS compliant, ensuring it is free from hazardous substances, making it suitable for environmentally conscious designs.

Conclusion:

The MM3Z12VST1G from ON Semiconductor is a reliable and efficient Zener diode that provides a stable 12V reference voltage in a compact SOT-23 package. Its low reverse leakage current, low Zener impedance, and robust power handling capabilities make it an excellent choice for a wide range of electronic applications requiring voltage regulation and protection.