PZU4.3DB2,115

Overview

The PZU4.3DB2,115 is a dual isolated general-purpose Zener diode from the Nexperia PZUxDB2 series, housed in a SOT353 (SC-88A) surface-mounted package. It features a nominal working voltage of 4.3 V with a tolerance of approximately ±2%. Key electrical parameters include a differential resistance of 90 Ω at IZ=5 mA, a reverse current of 1 μA max at IZ=0.5 mA, and a temperature coefficient of -2.5 mV/K. The device supports a total power dissipation of 250 mW to 275 mW depending on mounting conditions, with a non-repetitive peak reverse power dissipation of 40 W. Operating temperatures range from -55 °C to +150 °C.

Feature Summary

• Dual isolated diode configuration within a compact SMD plastic package
• High precision voltage regulation with approximately ±2% tolerance
• Qualified for automotive applications under AEC-Q101 standards

Applications

• General regulation functions

Procurement Notes

Verify component authenticity through authorized Nexperia distributors or direct sales channels. Confirm the specific ordering suffix matches the required halogen-free packaging variant if applicable. Ensure the procurement documentation references the correct PZUxDB2 series datasheet for accurate handling and storage guidelines during assembly processes.

Selection Notes

Select this component when space-constrained designs require dual independent voltage reference points. The SOT353 package offers a small footprint suitable for high-density PCB layouts. Consider the negative temperature coefficient for thermal stability requirements in the target operating environment.

Part Context

This part belongs to the PZUxDB2 series, which provides a wide range of nominal voltages from 2.7 V to 24 V in the same SOT353 package. The series is designed for general-purpose regulation, offering consistent performance characteristics across different voltage ratings while maintaining automotive qualification standards.

Replacement Considerations

Direct replacements must match the SOT353 pinout and ±2% tolerance. Verify that alternative dual Zener diodes meet the 4.3 V nominal voltage and similar thermal resistance specifications to ensure compatibility with existing board designs.