MM3Z3V9C

Single Zener Diodes Overview

The MM3Z3V9C is a Zener diode manufactured by onsemi, designed for surface-mount applications in the SOD-323F package. It provides voltage regulation with a nominal Zener voltage of 3.9 V and a power dissipation rating of 300 mW. The device features a tight voltage tolerance of 5% and operates within a temperature range of -50°C to +150°C. Key electrical parameters include a maximum reverse leakage current of 5 µA and a Zener impedance of 85 Ohms at a test current of 5 mA.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation in compact surface-mount form factors
• Engineered for high-density circuit board assembly with low profile
• Offers robust electrostatic discharge protection capabilities

Single Zener Diodes Applications

• Voltage regulation in portable electronic devices
• Protection circuits in cellular phones and handheld portables
• Reference voltage generation in high-density PC boards

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation, as the MM3Z series is produced by multiple vendors including Diotec Semiconductor and onsemi. Confirm the exact power rating (200 mW vs 300 mW) and package variant (SOD-323 vs SOD-323F) against the official datasheet. Ensure the tolerance and leakage current specifications match the design requirements before procurement.

Single Zener Diodes Selection Notes

Select this component when space-constrained designs require a reliable Zener reference with moderate power handling. The SOD-323F package offers a smaller footprint than standard SOD-323, making it suitable for dense layouts. Consider the 5% tolerance and thermal characteristics to ensure stability across the operating temperature range for precision applications.

Single Zener Diodes Part Context

This part belongs to the MM3Z series of Zener voltage regulators, which are available in various breakdown voltages ranging from 2.4 V to 75 V. The series is characterized by its small body outline dimensions and suitability for automated board assembly. It serves as a general-purpose solution for voltage clamping and regulation in consumer electronics.

Single Zener Diodes Replacement Considerations

Direct substitutes may include MM3Z3V9T1 or MM3Z3V9ST1 from onsemi, provided the power rating and package match. Cross-manufacturer equivalents such as those from Diotec Semiconductor should be verified for identical pinout and electrical specifications.