MM3Z3B9-AQ

Single Zener Diodes Overview

The MM3Z3B9-AQ is a surface-mount planar Zener diode manufactured by Diotec Semiconductor in the SOD-323F package. It provides a nominal Zener voltage of 3.9 V with a tight tolerance of ±2%. The device dissipates up to 300 mW and operates within a junction temperature range of -50°C to +150°C. Qualified under AEC-Q101 standards, it features low leakage current and sharp breakdown characteristics.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive reliability
• Tight ±2% Zener voltage tolerance
• Sharp voltage breakdown characteristic
• Low reverse leakage current

Single Zener Diodes Applications

• Voltage stabilization circuits
• Voltage regulator designs
• Automotive electronic systems

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required qualification level. Confirm the specific marking code corresponds to the intended voltage rating. Ensure the component meets the target application's environmental requirements before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation is critical due to its narrow tolerance band. The AEC-Q101 qualification makes it suitable for automotive environments requiring high reliability. Verify thermal management capabilities against the specified power dissipation limits.

Single Zener Diodes Part Context

This part belongs to the MM3Z series of SMD planar Zener diodes. The series covers a wide voltage range from 2.4 V to 75 V. All variants share the same SOD-323F mechanical outline and general electrical characteristics, differing primarily in their specific Zener voltage ratings.

Single Zener Diodes Replacement Considerations

Other parts within the MM3Z3B9 family (MM3Z3B9-Q or standard MM3Z3B9) may be considered if the specific AEC-Q101 qualification is not mandatory for the application.