MMS3Z18BGW

Single Zener Diodes Overview

The MMS3Z18BGW is an SMD planar Zener diode manufactured by Diotec Semiconductor, housed in a compact SOD-323 surface-mount package. It provides a nominal Zener voltage of 18 V with a tight tolerance of ±2%. The device features 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 the rated voltage, and a typical temperature coefficient ranging from +12.4 to +16.0 mV/°C.

Single Zener Diodes Feature Summary

• Provides sharp Zener voltage breakdown for precise regulation
• Maintains low leakage current under reverse bias conditions
• Ensures high stability through ±2% Zener voltage tolerance

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 indicate AEC-Q101 compliance or qualification respectively. Confirm that the standard commercial grade meets the reliability requirements for the intended application environment. Ensure compatibility with RoHS, REACH, and conflict mineral regulations during the sourcing process.

Single Zener Diodes Selection Notes

Select this component for applications requiring a stable 18 V reference in space-constrained designs. The SOD-323 package offers a small footprint suitable for dense PCB layouts. Consider the thermal resistance and power dissipation limits when designing heat management strategies for continuous operation near maximum ratings.

Single Zener Diodes Part Context

This component belongs to the MMS3Z series of SMD Planar Zener Diodes produced by Diotec Semiconductor. The series covers a wide voltage range from 2.4 V to 43 V, all sharing the same SOD-323 mechanical outline and general electrical characteristics. This specific part represents the 18 V variant within that standardized product family.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same manufacturer's lineup include other parts from the MMS3Z series, such as the MMS3Z16BGW or MMS3Z20BGW, provided the voltage rating matches the circuit design requirements.