BZB84-C4V7-QR

Overview

The Nexperia BZB84-C4V7-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 device provides a nominal Zener voltage of 4.7 V with a tolerance of approximately ±5%. Key electrical parameters include a total power dissipation of 300 mW, a non-repetitive peak reverse power dissipation of 40 W, and a maximum forward voltage of 0.9 V at 10 mA. It 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 Zener diodes in a single compact SOT-23 package.
• Qualified according to AEC-Q101 standards, making it suitable for demanding automotive electronic applications.
• Offers normalized E24 working voltage range from 2.4 V to 75 V with specific tolerance series options.

Applications

• General regulation functions
• Automotive electronics systems requiring qualified discrete semiconductors

Procurement Notes

Verify the complete part number including the suffix against official Nexperia documentation to ensure correct tolerance and packaging specifications. Confirm that the requested variant matches the required AEC-Q101 qualification status if used in automotive designs. Cross-reference the marking code UG% for identification on the SOT-23 package. Ensure design inputs align with the thermal resistance and power dissipation limits defined in the product data sheet.

Selection Notes

Select this component when a dual Zener configuration with a common anode is required in a small surface-mount footprint. The C-series designation indicates an approximate ±5% voltage tolerance, suitable for general-purpose regulation where tighter precision is not critical. Consider the 300 mW total power dissipation limit and the 40 W non-repetitive peak surge capability for transient protection scenarios. Verify compatibility with standard SOT-23 reflow soldering profiles.

Part Context

The BZB84-C4V7-QR belongs to the BZB84-Q series of dual voltage regulator diodes manufactured by Nexperia. This series expands upon the single-diode BZX84 family by providing two regulated channels in one package, reducing board space. The 'Q' suffix denotes AEC-Q101 qualification, distinguishing it from standard commercial variants. The C4V7 identifier specifies the 4.7 V nominal breakdown voltage within the E24 preferred value range.

Replacement Considerations

Direct functional substitutes within the same series include other BZB84-Q variants with different voltage ratings but identical pinout and package. For single-diode replacements, the BZX84-C4V7-QR offers similar electrical characteristics but lacks the second channel. Ensure any replacement maintains the SOT-23 package dimensions and AEC-Q101 qualification if automotive reliability is required.