BZB84-B43-QR

Overview

The Nexperia BZB84-B43-QR is a dual voltage regulator diode from the BZB84-Q series, housed in an SOT23 surface-mount package. It features a dual common anode configuration with two independent Zener diodes sharing a single anode terminal. The device provides a nominal working voltage of 43 V with a tolerance of ±2%. Key electrical parameters include a total power dissipation of 300 mW and a non-repetitive peak reverse power dissipation of 40 W per diode. The component operates within a junction temperature range of -55 °C to +150 °C and is qualified according to AEC-Q101 standards for automotive applications.

Feature Summary

• Dual common anode configuration integrating two independent Zener diodes in a compact SOT23 package
• Automotive qualification compliant with AEC-Q101 standards for high reliability
• High non-repetitive peak reverse power dissipation capability for surge protection

Applications

• General regulation functions
• Automotive electronic circuits requiring dual voltage references

Procurement Notes

Verify the specific ordering suffix and marking code against the official Nexperia datasheet to ensure correct tolerance selection. Confirm that the SOT23 footprint matches the design requirements for reflow or wave soldering processes. Check for any recent revision updates to the product data sheet to ensure compliance with current manufacturing specifications.

Selection Notes

Select this component when a dual common anode topology is required for space-constrained designs. The B-series designation indicates a tighter ±2% voltage tolerance compared to the C-series. Ensure the operating current remains within limits to maintain the specified temperature coefficient and reverse leakage characteristics for stable voltage regulation.

Part Context

This part belongs to the BZB84-Q series, which offers a comprehensive range of nominal working voltages from 2.4 V to 75 V. The series is designed for general-purpose Zener regulation in small-scale, high-density circuit designs. It complements other Nexperia discrete semiconductor products by providing automotive-grade reliability in standard surface-mount packages.

Replacement Considerations

Direct replacements within the same family include BZB84-C43-Q, which shares the same package and pinout but offers approximately ±5% voltage tolerance instead of ±2%. Other BZB84-Q variants with different voltage ratings can be used if the circuit design allows for voltage adjustment.