BZX38450-C11X

Single Zener Diodes Overview

The Nexperia BZX38450-C11X is a low-current voltage regulator diode housed in an SOD-323 (SC-76) surface-mount package. It features a nominal Zener voltage of 11 V with a ±5% tolerance, tested at a low 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. Key electrical characteristics include a maximum differential resistance of 150 Ω and a reverse leakage current of 9.1 µA at 5 mA test current.

Single Zener Diodes Feature Summary

• Designed for low bias and portable battery-powered applications due to specification at a low test current of 50 µA.
• Features an intentional minor rise in leakage current optimized for fast switching and noise reduction.
• Utilizes a small SOD-323 plastic package suitable for space-constrained surface-mount designs.

Single Zener Diodes Applications

• Low-current general regulation functions
• Portable battery-powered applications
• Low bias circuit regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix 'X' against official Nexperia documentation to confirm packaging details, as standard datasheets may list reel or cut tape options without explicitly defining this suffix variant. Ensure the component matches the BZX38450 series specifications for the 11 V rating and C tolerance class before integration.

Single Zener Diodes Selection Notes

Select this component for circuits requiring precise voltage reference at minimal quiescent current. The 50 µA test current makes it suitable for energy-efficient designs where standard Zener diodes would consume excessive power. Verify thermal constraints on the PCB footprint to ensure the 300 mW dissipation limit is not exceeded during operation.

Single Zener Diodes Part Context

This part belongs to the BZX38450 series of low-current voltage regulator diodes from Nexperia. The series covers a working voltage range from 1.8 V to 51 V and includes both ±2% and ±5% tolerance variants. The C designation indicates the approximate ±5% tolerance series, while the '11' specifies the 11 V nominal voltage level.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other BZX38450 variants with matching voltage and tolerance ratings. Cross-series replacements require verification of package compatibility (SOD-323) and electrical parameters such as test current and power dissipation limits.