BZX58550-B39X

Single Zener Diodes Overview

The Nexperia BZX58550-B39X is a low-current voltage regulator diode housed in an SOD523 (SC-79) surface-mounted package. It provides a nominal working voltage of 39 V with ±2% tolerance for the 'B' series variant. The device operates at a low test current of 50 µA, making it suitable for portable applications. Key electrical parameters include a maximum forward voltage of 0.9 V at 10 mA and a total power dissipation of 300 mW. The junction temperature range spans from -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Ultra-small and flat lead SMD plastic package design
• Specified at low test current for low bias applications
• Optimized fast switching and noise reduction characteristics

Single Zener Diodes Applications

• Low-current general regulation functions
• Portable battery-powered applications

Single Zener Diodes Procurement Notes

Verify the specific suffix against official Nexperia documentation to confirm packaging configuration and tape-and-reel specifications. Ensure the selected variant matches the required tolerance class for the intended circuit design. Cross-reference the marking code with the datasheet table to validate component authenticity during incoming inspection.

Single Zener Diodes Selection Notes

Select this component for circuits requiring precise voltage reference at minimal quiescent current. The ±2% tolerance series offers tighter regulation compared to standard variants. Consider the thermal resistance values when designing PCB copper areas to ensure operation within the specified junction temperature limits under continuous load conditions.

Single Zener Diodes Part Context

This part belongs to the BZX58550 series of low-current Zener diodes manufactured by Nexperia. The series covers a wide voltage range from 1.8 V to 51 V in a compact SOD523 footprint. It is designed to replace larger through-hole regulators in space-constrained modern electronics while maintaining stable performance at microampere bias levels.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include BZX58550-C39X for ±5% tolerance or other BZX58550 variants with different voltage ratings if circuit requirements change. Verify pinout compatibility and thermal characteristics before substituting.