MMSZ4679T1

Single Zener Diodes Overview

The onsemi MMSZ4679T1G is a single Zener voltage regulator diode housed in an SOD-123 surface-mount package. It provides a nominal reverse Zener voltage of 2.0 V with a tolerance range of 1.90 V to 2.10 V at a test current (IZT) of 50 µA. The device has a maximum steady-state power dissipation rating of 500 mW and a low reverse leakage current of 5 µA at 1 V. It operates within a junction temperature range of -55°C to +150°C.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation for low-voltage applications
• Designed for high-density automated board assembly
• Features low reverse leakage current for improved efficiency

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix, as 'SZ' indicates automotive qualification (AEC-Q101). Confirm RoHS compliance status for the exact part number variant. Ensure the procurement documentation matches the required tape and reel specifications for automated placement.

Single Zener Diodes Selection Notes

Select this component when a stable 2V reference is needed in a compact footprint. Consider the 50 µA test current requirement for biasing. Evaluate thermal derating curves if operating near the maximum power dissipation limit or elevated ambient temperatures.

Single Zener Diodes Part Context

This device belongs to the MMSZ4xxxT1G series of 500 mW Zener diodes. It serves as a surface-mount alternative to leadless packages, offering a convenient solution for space-constrained designs while maintaining robust electrical characteristics and reliability standards.

Single Zener Diodes Replacement Considerations

Cross-reference with other MMSZ4679 variants from different manufacturers. Verify pinout compatibility and physical dimensions before substitution. Ensure equivalent voltage tolerance and leakage current specifications are met.