MM3Z18B

Single Zener Diodes Overview

The MM3Z18B is a silicon planar Zener diode manufactured by Diotec Semiconductor, housed in an SOD-323F surface-mount package. It provides a nominal Zener voltage of 18V with a tight tolerance of approximately ±2%. The device supports a maximum power dissipation of 300 mW and operates within a junction temperature range of -50°C to +150°C. Electrical characteristics include a dynamic resistance of 45 Ohms at a test current of 5 mA, a reverse leakage current of 0.1 µA at 13 V, and a typical temperature coefficient between +6% and +9% per degree Celsius.

Single Zener Diodes Feature Summary

• Provides sharp Zener voltage breakdown characteristics for precise regulation
• Maintains low leakage current under reverse bias conditions
• Offers high voltage tolerance accuracy with approximately ±2% specification

Single Zener Diodes Applications

• Voltage stabilization circuits
• Linear voltage regulators
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as variants such as -Q or -AQ denote AEC-Q101 compliance or qualification respectively. Confirm that the required voltage tolerance aligns with the standard ±2% specification provided in the datasheet. Ensure the application environment remains within the specified thermal limits to maintain performance integrity.

Single Zener Diodes Selection Notes

Select this component for applications requiring stable reference voltages with tight tolerance specifications. The SOD-323F package offers a compact footprint suitable for space-constrained designs. Consider the thermal resistance and power dissipation capabilities when designing heat management strategies for continuous operation.

Single Zener Diodes Part Context

This component belongs to the MM3Z2B4 through MM3Z75B series of SMD Planar Zener Diodes from Diotec Semiconductor. The series covers a wide voltage range from 2.4 V to 47 V, all sharing similar mechanical and electrical profiles within the SOD-323F package format.

Single Zener Diodes Replacement Considerations

Direct substitutes are not explicitly listed in the source documentation. Verify compatibility based on matching Zener voltage, tolerance, package type, and power dissipation ratings before implementation.

Single Zener Diodes FAQ

What is the marking code for the MM3Z18B?

The marking code for the MM3Z18B is 8J.

Does the MM3Z18B support automotive standards?

Standard versions are commercial/industrial grade. Versions with the -Q suffix are AEC-Q101 compliant, and those with the -AQ suffix are AEC-Q101 qualified.