BZB84-B39-QR

Overview

The Nexperia BZB84-B39-QR is a dual voltage regulator diode in the BZB84-Q series, housed in an SOT23 surface-mounted plastic package. It features a dual common anode configuration with two independent cathodes. The device provides a nominal Zener voltage of 39 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. Operating characteristics specify a maximum reverse current of 130 μA at IZ=5 mA and a differential resistance of 130 Ω. The component is qualified according to AEC-Q101 standards for automotive applications.

Feature Summary

• Dual common anode configuration enabling compact circuit designs
• Automotive qualification compliant with AEC-Q101 standards
• High precision voltage regulation with ±2% tolerance series

Applications

• General regulation functions
• Voltage reference circuits
• Over-voltage protection in automotive environments

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details such as reel size or tape width. Ensure that the selected variant matches the required automotive grade specifications and package dimensions for your PCB layout. Cross-reference the marking code RB% to confirm authenticity upon receipt.

Selection Notes

Select this component when a dual Zener solution is required within a single SOT23 footprint to save board space. The ±2% tolerance makes it suitable for precision applications compared to the standard ±5% C-series variants. Consider the thermal resistance of 417 K/W in free air when designing heat dissipation strategies for high-density assemblies.

Part Context

This part belongs to the BZB84-Q series, which offers a comprehensive range of dual Zener diodes from 2.4 V to 75 V. The series is designed for high-density circuit designs and includes both Japanese and European selection groups. It serves as a compact alternative to discrete single Zener diodes in space-constrained automotive and industrial electronics.

Replacement Considerations

Direct substitutes within the same series include BZB84-C39-QR (±5% tolerance) or other BZB84-Q types with different voltages. Single-channel equivalents like BZX84-C39-QR are available but require separate footprints. Verify pin compatibility and thermal limits before substituting.

FAQ

What is the marking code for the BZB84-B39-QR?

The marking code for the BZB84-B39-QR is RB%.

What is the differential resistance of the BZB84-B39-QR?

The differential resistance (rdif) is 130 Ω at a test current of IZ = 5 mA.

Is the BZB84-B39-QR suitable for automotive use?

Yes, the BZB84-Q series is qualified according to AEC-Q101 and is recommended for use in automotive applications.