BZB84-C4V3-QR

Overview

The Nexperia BZB84-C4V3-QR is a dual voltage regulator diode in the BZB84-Q series, housed in an SOT-23 (TO-236AB) surface-mount package. It features a dual common anode configuration with two independent cathodes. The nominal Zener voltage is 4.3 V with a tolerance of approximately ±5 %. Total power dissipation is rated at 300 mW per device, while non-repetitive peak reverse power dissipation reaches 40 W. Key electrical parameters include a maximum forward voltage of 0.9 V at 10 mA, a differential resistance of 3 Ω at IZ = 5 mA, and a temperature coefficient of -3.5 mV/K. The component operates within a junction temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration providing two independent regulation channels in a single compact package.
• Qualified according to AEC-Q101 standards for automotive applications.
• Small plastic SOT-23 package suitable for automated surface-mounted design.

Applications

• General regulation functions
• Automotive electronic circuits

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details such as reel or cut tape specifications. Ensure the part number matches the required tolerance series, as the 'C' designation indicates approximately ±5 % voltage tolerance. Confirm RoHS compliance status through the manufacturer's latest product data sheet before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel voltage reference is required in a space-constrained design. The BZB84-C4V3-QR offers a 4.3 V nominal output with standard automotive qualification. Consider the negative temperature coefficient of -3.5 mV/K for thermal stability requirements. Verify that the 300 mW total power dissipation limit accommodates the expected operating current and ambient temperature conditions of the target application.

Part Context

This device belongs to the Nexperia BZB84-Q series, which comprises 74 types of dual voltage regulator diodes. The series covers a working voltage range from 2.4 V to 75 V in the E24 range. All variants share the same SOT-23 plastic package and dual common anode topology, differing primarily in their nominal Zener voltage and tolerance grades (B for ±2 %, C for ±5 %).

Replacement Considerations

Other members of the BZB84-Q series with different nominal voltages may serve as functional replacements if the voltage requirement differs. Single-channel equivalents like the BZX84 series are not direct pin-compatible substitutes due to the dual-anode architecture. Verify package dimensions and marking codes when substituting with other manufacturers' dual Zener diodes in SOT-23 packages.