BZX84J-B18-QX

Single Zener Diodes Overview

The BZX84J-B18-QX is a single Zener diode manufactured by Nexperia, designed for surface-mount applications in the SOD-323F package. It features a nominal Zener voltage of 18 V with a tight tolerance of ±2%. The device supports a maximum power dissipation of 550 mW and operates within a temperature range of -55°C to +150°C. Tested at 5 mA, it ensures stable regulation performance suitable for general-purpose voltage reference tasks.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a narrow ±2% tolerance band for consistent circuit performance.
• Engineered for high thermal stability across an extended operating temperature range from -55°C to +150°C.
• Utilizes a compact SOD-323F surface-mount footprint to facilitate automated assembly and space-constrained designs.

Single Zener Diodes Applications

• General voltage regulation functions
• Voltage reference circuits
• Signal level shifting

Single Zener Diodes Procurement Notes

Verify the specific suffix QX against official Nexperia documentation to confirm packaging details and tape-and-reel specifications. Ensure the selected variant matches the required ±2% tolerance designation (B-series) rather than standard or wide-tolerance alternatives. Cross-reference the SOD-323F pinout with your PCB layout to prevent orientation errors during placement.

Single Zener Diodes Selection Notes

Select this component when a low-cost, small-footprint Zener diode with tighter-than-standard voltage accuracy is required. The BZX84J series offers improved consistency compared to generic equivalents. Consider the 550 mW power rating relative to expected current levels to ensure safe operation without exceeding thermal limits in enclosed environments.

Single Zener Diodes Part Context

This part belongs to the Nexperia BZX84J family of low-power Zener diodes. The J-series specifically denotes the ±2% tolerance grade, distinguishing it from the wider tolerance C-series. These devices are widely used in consumer electronics and industrial control boards where reliable voltage clamping and referencing are critical for signal integrity.

Single Zener Diodes Replacement Considerations

Direct substitutes include other Nexperia parts within the BZX84J-B18 line, such as BZX84J-B18,115. Verify that any alternative maintains the identical SOD-323F package dimensions and electrical characteristics to ensure mechanical and functional compatibility.