PZU4.3B3A,115

Single Zener Diodes Overview

The PZU4.3B3A,115 is a general-purpose Zener voltage regulator diode manufactured by Nexperia USA Inc. It is housed in a SOD323 (SC-76) very small Surface-Mounted Device plastic package. The device features a nominal Zener voltage of 4.3 V with a tolerance series A of approximately ±1%. Total power dissipation is rated at 320 mW, and the non-repetitive peak reverse power dissipation is up to 40 W. It exhibits low reverse current characteristics suitable for precision regulation applications.

Single Zener Diodes Feature Summary

• Ultra-small SMD plastic package design
• High tolerance accuracy for stable regulation
• Low reverse leakage current performance

Single Zener Diodes Applications

• General voltage regulation functions
• Reference voltage generation
• Clamping circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix 'A' indicates the ±1% tolerance variant distinct from standard B or C series. Confirm the SC-76 package designation matches the required footprint. Ensure RoHS compliance status aligns with project requirements before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when precise voltage reference stability is critical due to its tight tolerance rating. The compact SC-76 package makes it suitable for space-constrained PCB layouts. Consider thermal management capabilities given the 320 mW total power dissipation limit during continuous operation.

Single Zener Diodes Part Context

This part belongs to Nexperia's PZU series of Zener diodes designed for surface-mount technology. The series offers a wide working voltage range from nominal 2.4 V to 51 V. The PZU4.3B3A variant specifically targets applications requiring tighter voltage accuracy compared to standard tolerance devices within the same family.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other Zener diodes with 4.3 V nominal voltage, similar power ratings, and compatible SOT-323 or SC-76 packages. Verify electrical parameters such as dynamic impedance and leakage current match original specifications.