MMSZ5255AS-AU_R1_000A1

Single Zener Diodes Overview

The MMSZ5255AS-AU_R1_000A1 is a surface mount silicon Zener diode from the Panjit MMSZ5229AS-AU series, designed for automated assembly. It features planar die construction and operates within a junction temperature range of -55°C to +150°C. The component provides a nominal Zener voltage of 28V with a maximum impedance of 44Ω at a test current of 4.5mA. It dissipates up to 200mW at 25°C ambient temperature and maintains a maximum reverse leakage current of 0.1µA at its rated voltage.

Single Zener Diodes Feature Summary

• Planar die construction ensures stable electrical performance
• AEC-Q101 qualified for automotive reliability standards
• Halogen-free green molding compound compliant with IEC61249
• SOD-323 package optimized for automated surface mount processes

Single Zener Diodes Applications

• Automotive electronics circuits requiring AEC-Q101 compliance
• Voltage reference applications in power supply systems
• Overvoltage protection in signal conditioning circuits

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, as codes indicate tape and reel dimensions or orientation. Confirm RoHS and halogen-free status requirements against project specifications. Ensure the manufacturer's datasheet revision aligns with design documentation before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 28V regulation point is required in space-constrained designs utilizing SOD-323 footprints. Consider the 200mW power dissipation limit and thermal derating curves for high-temperature environments. Verify that the 44Ω impedance meets the noise and stability requirements of the target application circuit.

Single Zener Diodes Part Context

This part belongs to the MMSZ5229AS-AU series of low-power Zener diodes manufactured by Panjit International Inc. The series covers a wide voltage range from 4.3V to 51V in the compact SOD-323 package. These components are widely used in consumer electronics and automotive modules where small form factors and reliable voltage regulation are critical.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 28V nominal voltage, SOD-323 package, and 200mW power rating. Verify equivalent impedance and leakage characteristics. Automotive applications require alternative parts that also hold AEC-Q101 qualification.