MMSZ51T1

Single Zener Diodes Overview

The MMSZ51T1G is a Zener voltage regulator diode from onsemi, packaged in the SOD-123 surface-mount format. It provides a nominal reverse Zener voltage of 51 V with a standard tolerance of ±5%. The device has a steady-state power dissipation rating of 500 mW and operates within a junction temperature range of -55°C to +150°C. Electrical characteristics include a maximum Zener impedance of 180 ohms at a test current of 2 mA, and a maximum reverse leakage current of 50 nA at a reverse voltage of 35.7 V.

Single Zener Diodes Feature Summary

• Designed for high-density applications with a small SOD-123 package outline.
• Provides robust electrostatic discharge protection rated at Class 3 per Human Body Model.
• Qualified for automotive applications under AEC-Q101 standards.

Single Zener Diodes Applications

• Voltage regulation circuits
• ESD protection components
• High density PC boards

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, as the 'T1' designation indicates tape and reel shipping. Confirm RoHS compliance status and lead-free finish requirements against specific project constraints. Ensure the component meets the necessary environmental operating temperatures for the intended deployment environment.

Single Zener Diodes Selection Notes

Select this component when a 51 V reference or regulation point is required in a compact surface-mount layout. Consider the thermal resistance values if the application involves significant power dissipation near the maximum ratings. Evaluate the impedance and leakage specifications to ensure compatibility with the target circuit's sensitivity levels.

Single Zener Diodes Part Context

This part belongs to the MMSZxxxT1G series of Zener diodes manufactured by onsemi. The series offers a wide breakdown voltage range from 2.4 V to 56 V in the SOD-123 package. It serves as an alternative to traditional leaded packages while maintaining similar electrical performance profiles suitable for general-purpose voltage regulation tasks.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other MMSZxxxT1G variants with different voltage ratings. Automotive-grade equivalents are available with the SZMMSZ prefix, which require unique site and control change documentation.