BZX8450-B51R

Single Zener Diodes Overview

The Nexperia BZX8450-B51R is a low-current voltage regulator diode housed in a SOT23 surface-mounted device plastic package. It features a nominal working voltage of 51 V with a tolerance range of 50.00 V to 52.00 V. The device has a total power dissipation of 250 mW and operates within a junction temperature range of -55 °C to +150 °C. Electrical characteristics include a maximum forward voltage of 0.9 V at 10 mA, a differential resistance of 400 Ω, and a reverse current of 180 µA at 5 mA.

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.
• Includes intentional minor rise of leakage current for optimized fast switching and noise reduction.
• Available in a small SOT23 Surface-Mounted Device plastic package.

Single Zener Diodes Applications

• Low-current general regulation functions

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix 'R' against official Nexperia documentation to confirm reel packaging specifications. Ensure the component matches the exact BZX8450-B51 type number for correct voltage tolerance and electrical parameters. Cross-reference datasheet revision dates to confirm current production status and any potential design changes.

Single Zener Diodes Selection Notes

Select this component for circuits requiring precise low-current voltage regulation. The 51 V nominal breakdown voltage suits high-voltage reference needs. Consider the 400 Ω differential resistance and 180 µA reverse current limits when designing bias networks. Verify thermal management requirements given the 250 mW power dissipation limit in free air.

Single Zener Diodes Part Context

This part belongs to the BZX8450 series of low-current voltage regulator diodes manufactured by Nexperia. The series offers two tolerance selections (±2% and ±5%) across a working voltage range from 1.8 V to 51 V. These devices are intended for general-purpose regulation in compact electronic designs utilizing standard surface-mount assembly processes.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include BZX8450-C51 variants which share the ±5% tolerance profile. Other BZX8450 types with identical 51 V ratings may be considered if pinout and package dimensions match exactly. Verify that alternative parts meet the same 250 mW power dissipation and temperature operating limits.