SZMMSZ4683T1G

Single Zener Diodes Overview

The onsemi SZMMSZ4683T1G is a single-channel Zener voltage regulator diode housed in an SOD-123 surface-mount package. It provides a nominal reverse Zener voltage of 3.0 V with a tolerance range of 2.85 V to 3.15 V at a test current (IZT) of 50 mA. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -55°C to +150°C. It features a low reverse leakage current of 0.8 μA at a reverse voltage of 1 V.

Single Zener Diodes Feature Summary

• SZ prefix indicates qualification for automotive applications, meeting AEC-Q101 standards and PPAP capability requirements.
• Low reverse current characteristic optimized for stable voltage regulation performance.
• SOD-123 package designed for high-density automated board assembly.
• ESD protection rated at Class 3 (>16 kV) per the Human Body Model.

Single Zener Diodes Applications

• Automotive electronic circuits requiring unique site and control change documentation.
• High-density surface mount printed circuit board designs.
• Voltage reference and regulation tasks within wide reverse voltage ranges.

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'SZ' is explicitly required to ensure compliance with specific automotive quality management protocols. Confirm that the component meets AEC-Q101 qualification standards and PPAP capability requirements mandated by your supply chain specifications before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a precise 3.0 V Zener reference is needed in a compact SOD-123 footprint. Ensure the application environment accommodates the specified thermal resistance values and power derating curves. Verify that the low leakage current specification aligns with the sensitivity requirements of the target circuit design.

Single Zener Diodes Part Context

This part belongs to the MMSZ4xxxT1G and SZMMSZ4xxxT1G series of 500 mW Zener Voltage Regulators. These devices serve as a convenient alternative to leadless 34-package styles while offering a wide Zener reverse voltage range from 1.8 V to 43 V. The series is manufactured using void-free, transfer-molded thermosetting plastic cases.

Single Zener Diodes Replacement Considerations

Standard MMSZ4683T1G serves as a functional equivalent but lacks the automotive-specific manufacturing controls associated with the SZ prefix. Cross-referencing requires verifying that the replacement meets all necessary AEC-Q101 and PPAP documentation requirements if used in regulated automotive environments.