BZX38450-C4V3-QX

Single Zener Diodes Overview

The Nexperia BZX38450-C4V3-QX is a low-current voltage regulator diode in an SOD323 (SC-76) surface-mount package. It features a nominal Zener voltage of 4.3 V with ±5% tolerance, specified at a test current of 50 μA. The device supports a total power dissipation of up to 300 mW and operates within a junction temperature range of -55 °C to +150 °C. Qualified under AEC-Q101 for automotive applications, it offers optimized fast switching and noise reduction characteristics.

Single Zener Diodes Feature Summary

• Designed for low bias and portable battery-powered applications through specification at a low test current of 50 μA
• Features intentional minor rise of leakage current for optimized fast switching and noise reduction
• Qualified according to AEC-Q101 standard for use in automotive applications

Single Zener Diodes Applications

• Low-current general regulation functions

Single Zener Diodes Procurement Notes

Verify the specific suffix 'QX' against official Nexperia documentation to confirm packaging details such as reel or cut tape configuration. Ensure the component meets AEC-Q101 requirements if deployed in automotive environments. Confirm that the SOD323 footprint matches the target PCB design guidelines provided in the datasheet.

Single Zener Diodes Selection Notes

Select this component for circuits requiring precise voltage regulation at very low bias currents. The C-series provides approximately ±5% tolerance suitable for general-purpose regulation. Consider the thermal resistance characteristics when designing for high ambient temperatures or limited board space.

Single Zener Diodes Part Context

This part belongs to the BZX38450-Q series of low-power voltage regulator diodes. The series includes multiple breakdown voltages ranging from 1.8 V to 51 V in both ±2% and ±5% tolerance options. All variants share the same compact SOD323 package and automotive qualification profile.

Single Zener Diodes Replacement Considerations

Other parts within the BZX38450-Q series with different voltage ratings or tolerance codes may serve as functional substitutes if electrical parameters align with the design requirements.