BZX8450-C1V8-QVL

Single Zener Diodes Overview

The Nexperia BZX8450-C1V8-QVL is a low-current voltage regulator diode belonging to the BZX8450-Q series, designed for surface-mount applications in SOT-23 plastic packages. It provides a nominal Zener voltage of 1.8 V with a tolerance of ±5%. The device operates at a specified test current of 50 µA, making it suitable for low bias and portable battery-powered circuits. Key electrical parameters include a maximum forward voltage of 0.9 V at 10 mA, a total power dissipation of 250 mW, and a reverse leakage current of 7.5 µA at 5 mA. It features a differential resistance of 600 Ω and a diode capacitance of 220 pF.

Single Zener Diodes Feature Summary

• Qualified according to AEC-Q101 standards for automotive applications
• Specified at a low test current of 50 µA for low bias operation
• Intentional minor rise of leakage current optimized for fast switching and noise reduction

Single Zener Diodes Applications

• Low-current general regulation functions
• Portable battery-powered applications
• Automotive electronics systems

Single Zener Diodes Procurement Notes

Verify the specific suffix QVL against the manufacturer's official documentation to confirm packaging details and manufacturing site codes. Ensure compatibility with SOT-23 footprint requirements during procurement. Confirm that the C selection (±5% tolerance) aligns with circuit design specifications rather than assuming standard tolerances across all variants.

Single Zener Diodes Selection Notes

Select this component when a precise 1.8 V reference is required under very low current conditions. The BZX8450 series is distinct from the standard BZX84 due to its 50 µA test current specification. Verify thermal constraints on FR4 PCBs if operating near the 250 mW limit. Consider the high differential resistance for impedance matching in sensitive low-power designs.

Single Zener Diodes Part Context

This part belongs to the Nexperia BZX8450-Q series, which expands upon the traditional BZX84 family by offering lower test currents. The series includes both B (±2%) and C (±5%) tolerance selections. The BZX8450-C1V8-QVL specifically utilizes the C tolerance band and the QVL ordering suffix, indicating a specific reel or tape configuration within the SOT-23 package lineup.

Single Zener Diodes Replacement Considerations

Direct replacements within the same series include BZX8450-B1V8-Q for tighter tolerance. Cross-series equivalents like the standard BZX84-C1V8 may differ significantly in test current (typically 5 mA vs 50 µA), affecting performance in low-bias circuits.