BZB84-B22-QR

Overview

The Nexperia BZB84-B22-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 22 V with a tight tolerance of ±2%. Key electrical parameters include a total power dissipation of 300 mW, a maximum reverse current of 55 µA at IZ=5 mA, and a differential resistance of 16.4 Ω. It operates within a 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 allows for compact circuit designs requiring two regulated voltages or polarity protection.
• Automotive-grade qualification ensures reliability and suitability for demanding environments under AEC-Q101 standards.
• High precision voltage regulation with ±2% tolerance series offers stable performance for sensitive reference applications.

Applications

• General voltage regulation functions
• Automotive electronic systems
• Over-voltage protection circuits

Procurement Notes

Verify the specific ordering suffix and marking code against the official Nexperia datasheet to ensure correct tolerance selection. Confirm that the SOT-23 footprint matches the target PCB design requirements. Check for any recent product change notifications regarding material composition or manufacturing site updates before finalizing procurement orders.

Selection Notes

Select this component when a dual-diode solution is required in a minimal footprint. The B-series designation indicates a tighter ±2% voltage tolerance compared to the C-series. Ensure the application current remains within the specified limits to maintain the rated power dissipation and thermal stability. Consider the differential resistance value for high-frequency noise sensitivity.

Part Context

This part belongs to the Nexperia BZB84-Q series, which expands the manufacturer's portfolio of small-form-factor Zener diodes. The series covers a wide working voltage range from 2.4 V to 75 V, offering both B (±2%) and C (±5%) tolerance options. It complements single-diode variants like the BZX84 series by providing integrated dual functionality in the same SOT-23 package.

Replacement Considerations

Direct functional substitutes within the same series include BZB84-C22-Q for looser tolerance requirements. Single-diode equivalents such as BZX84-B22-Q may be used if only one channel is needed, though this increases board space. Verify pinout compatibility and thermal characteristics when cross-referencing with other manufacturers' dual Zener offerings.