BZX84W-B4V3-QF

Single Zener Diodes Overview

The Nexperia BZX84W-B4V3-QF is a general-purpose Zener diode with a nominal voltage of 4.3 V and ±2% tolerance, housed in an SOT-323 (SC-70) package. It features a total power dissipation of 275 mW, a maximum reverse current of 3 µA at 1 V, and a differential resistance of 90 Ω at 5 mA. The device operates within a temperature range of -55 °C to +150 °C, has a thermal resistance of 455 K/W, and is qualified under AEC-Q101 for automotive applications.

Single Zener Diodes Feature Summary

• Qualified according to AEC-Q101 standards for automotive use
• Wide working voltage range from 2.4 V to 75 V
• Leadless very small Surface-Mounted Device plastic package

Single Zener Diodes Applications

• General regulation functions
• High-frequency applications

Single Zener Diodes Procurement Notes

Verify the specific suffix 'QF' against official Nexperia documentation to confirm manufacturing site and tape-and-reel specifications. Ensure the component matches the exact BZX84W-B4V3-Q type number for correct tolerance and marking code D9%. Cross-reference datasheet revision dates to guarantee compliance with current product specifications.

Single Zener Diodes Selection Notes

Select this component when a precise 4.3 V reference with tight ±2% tolerance is required in space-constrained designs. The SOT-323 package supports high-density mounting, while the AEC-Q101 qualification ensures reliability in automotive environments. Consider the 275 mW power dissipation limit and thermal characteristics during circuit layout.

Single Zener Diodes Part Context

This part belongs to the BZX84W-Q series, which offers normalized E24 breakdown voltages ranging from 2.4 V to 75 V. The series includes both ±2% and ±5% tolerance variants, providing flexibility for various precision requirements. All devices share the same compact SC-70 footprint and automotive-grade qualification profile.

Single Zener Diodes Replacement Considerations

Direct substitutes include other BZX84W-B4V3-Q variants with different packaging suffixes or manufacturer site codes. Verify that any replacement maintains the ±2% tolerance and AEC-Q101 qualification status to ensure functional equivalence in automotive circuits.