BZX8450-C47R

Single Zener Diodes Overview

The Nexperia BZX8450-C47R is a low-current voltage regulator diode housed in an SOT23 surface-mount package. It provides a nominal Zener voltage of 47 V with a tolerance of approximately ±5%. The device dissipates up to 250 mW and operates within a junction temperature range of -55 °C to +150 °C. Electrical characteristics are specified at a test current of 50 µA, featuring a maximum reverse leakage current of 32.9 µA and a differential resistance of 375 Ω.

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 an intentional minor rise in leakage current to optimize fast switching and reduce noise.
• Encapsulated in a compact SOT23 plastic package suitable for space-constrained surface-mount designs.

Single Zener Diodes Applications

• Low-current general regulation functions
• Portable battery-powered circuitry
• Low bias voltage reference circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official documentation to confirm reel packaging specifications. Ensure the component matches the BZX8450 series data sheet Rev. 3 requirements for automotive or industrial qualification if applicable. Cross-reference the marking code L3% to validate authenticity upon receipt.

Single Zener Diodes Selection Notes

Select this component when a stable 47 V reference is required under minimal current conditions. The low test current specification makes it suitable for energy-efficient designs where standard Zener diodes would consume excessive power. Verify that the 250 mW power dissipation rating aligns with the thermal constraints of the target PCB footprint.

Single Zener Diodes Part Context

This part belongs to the BZX8450 series of low-current voltage regulator diodes from Nexperia. The series offers working voltages from 1.8 V to 51 V in a small SOT23 package. It includes two tolerance series, with the C variant providing approximately ±5% accuracy, distinguishing it from the tighter ±2% B series.

Single Zener Diodes Replacement Considerations

Compatible substitutes include other BZX8450 series variants such as BZX8450-B47 or BZX8450-C43, provided the voltage tolerance and leakage characteristics meet the design requirements. Standard BZX84-C47 devices may serve as alternatives but lack the specific low-current optimization features documented for the BZX8450 series.