BZX8450-B11R

Single Zener Diodes Overview

The Nexperia BZX8450-B11R is a low-current voltage regulator diode from the BZX8450 series, housed in a small SOT23 surface-mount plastic package. It features a nominal working voltage of 11 V with a ±2% tolerance (B selection). The device is specified at a low test current of 50 µA, making it suitable for low bias and portable battery-powered applications. Key electrical parameters include a total power dissipation of 250 mW, a maximum forward voltage of 0.9 V at 10 mA, and a non-repetitive peak reverse power dissipation of 40 W. The junction temperature range extends from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Specified at a low test current of 50 µA, ideal for low bias and portable battery-powered applications
• Intentional minor rise of leakage current for optimized fast switching and noise reduction
• Available in normalized E24 ±2% (B) and approximately ±5% (C) tolerance series

Single Zener Diodes Applications

• Low-current general regulation functions

Single Zener Diodes Procurement Notes

Verify the specific suffix 'R' against the manufacturer's official ordering documentation to confirm reel packaging specifications. Ensure the selected variant matches the required voltage tolerance class (B or C) for the intended circuit design. Cross-reference the marking code '%PM' with the datasheet table to confirm authenticity and correct part identification upon receipt.

Single Zener Diodes Selection Notes

Select this component when designing circuits requiring precise voltage regulation at very low bias currents. The B-selection offers tighter voltage tolerance compared to the C-series. Consider the thermal resistance characteristics and the low test current specification to ensure compatibility with battery-operated systems where minimizing quiescent current is critical for extended operational life.

Single Zener Diodes Part Context

This component belongs to the Nexperia BZX8450 series of low-current voltage regulator diodes. The series provides a wide working voltage range from 1.8 V to 51 V in a compact SOT23 package. It is designed specifically for applications demanding low power consumption and stable regulation under minimal current conditions, distinguishing it from standard Zener diodes that require higher test currents.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same family include BZX8450-C11R for a ±5% tolerance version. Other series like BZX84-B or BZX84W offer similar functionalities but may differ in test current specifications, package dimensions, or power dissipation ratings. Verify pinout and thermal characteristics before substitution.