BZX58550-C30-QX

Single Zener Diodes Overview

The Nexperia BZX58550-C30-QX is a low-current voltage regulator diode housed in an SOD523 (SC-79) ultra-small surface-mounted package. It provides a nominal working voltage of 30 V with ±5% tolerance, specified at a test current of 50 µA. The device supports a total power dissipation of up to 300 mW and operates within a junction temperature range of -55 °C to +150 °C. It features a forward voltage of 0.9 V at 10 mA and is qualified according to AEC-Q101 standards for automotive applications.

Single Zener Diodes Feature Summary

• Designed for low bias and portable battery-powered applications due to specification at a low test current of 50 µA.
• Optimized for fast switching and noise reduction through intentional minor rise of leakage current.
• Qualified according to AEC-Q101 standards for use in automotive applications.

Single Zener Diodes Applications

• Low-current general regulation functions

Single Zener Diodes Procurement Notes

Verify the specific suffix 'Q' indicates AEC-Q101 qualification and automotive suitability. Confirm the 'C' designation corresponds to the ±5% tolerance series rather than the ±2% 'B' series. Ensure the ordering code matches the exact 30 V nominal voltage requirement. Cross-reference the latest datasheet revision for any potential marking or packaging changes.

Single Zener Diodes Selection Notes

Select this component when space-constrained designs require an ultra-small SOD523 footprint. It is suitable for circuits requiring precise voltage reference at very low bias currents. Consider the thermal resistance characteristics if mounting on FR4 PCBs with limited copper area. Verify that the 300 mW power dissipation rating aligns with the expected operating conditions.

Single Zener Diodes Part Context

This part belongs to the BZX58550-Q series of low-current voltage regulator diodes from Nexperia. The series offers a wide range of nominal working voltages from 1.8 V to 51 V. It is available in two tolerance series: ±2% (B-series) and approximately ±5% (C-series). All variants share the same SOD523 package and AEC-Q101 qualification.

Single Zener Diodes Replacement Considerations

Other BZX58550-Q series variants with different voltage ratings can replace this unit if the circuit design allows for voltage adjustment. Ensure the replacement maintains the ±5% tolerance ('C' suffix) and AEC-Q101 qualification ('Q' suffix) requirements.