PZU43B-QX

Single Zener Diodes Overview

The PZU43B-QX is a Zener voltage regulator diode manufactured by Nexperia, housed in the SOD323 (SC-76) surface-mount package. It belongs to the general-purpose Zener diode series with a nominal breakdown voltage of 43 V and a tolerance series B, indicating an approximate ±5% accuracy. The component supports a total power dissipation of up to 320 mW and features a non-repetitive peak reverse power dissipation capability of 40 W. Designed for automotive applications, it holds AEC-Q101 qualification.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• Compact SOD323 plastic surface-mount package
• Low reverse leakage current characteristics
• Wide working voltage range covering nominal 2.4 V to 51 V

Single Zener Diodes Applications

• General regulation functions
• Automotive electronic circuits
• Voltage reference applications

Single Zener Diodes Procurement Notes

Verify the specific suffix QX against the official Nexperia datasheet to confirm packaging details and compliance status. Ensure the ordering part number matches the required tolerance series B specifications. Cross-reference the manufacturer's longevity program data to confirm availability timelines before finalizing procurement plans.

Single Zener Diodes Selection Notes

Select this component when a compact, automotive-grade Zener diode with a 43 V nominal rating is required. The SOD323 package suits space-constrained designs. Verify that the ±5% tolerance aligns with circuit requirements. Confirm thermal management capabilities for the 320 mW total power dissipation limit within the target application environment.

Single Zener Diodes Part Context

This device is part of Nexperia's broad portfolio of Zener voltage regulator diodes designed for robust performance in demanding environments. The PZU series utilizes small plastic packages suitable for automated surface-mount assembly processes. It serves as a reliable solution for voltage clamping and reference generation in modern electronic systems.

Single Zener Diodes Replacement Considerations

Direct substitutes include other Nexperia PZU43 variants such as PZU43BA or PZU43BL, provided they meet the same SOD323 footprint and electrical tolerances. Verify pinout compatibility and thermal characteristics when considering cross-manufacturer alternatives.