BZX84W-C3V9X

Single Zener Diodes Overview

The Nexperia BZX84W-C3V9X is a general-purpose Zener diode housed in a SOT-323 (SC-70) leadless Surface-Mounted Device plastic package. It provides a nominal working voltage of 3.9 V with a ±5% tolerance. The device features a total power dissipation of 275 mW and operates within a junction temperature range of -55 °C to +150 °C. Key electrical characteristics include a maximum reverse current of 3 µA at 1 V, a differential resistance of 90 Ω at IZ = 5 mA, and a typical temperature coefficient of -2.5 mV/K.

Single Zener Diodes Feature Summary

• General-purpose Zener diodes in a very small SOT323 (SC-70) leadless SMD plastic package
• Wide working voltage range from nominal 2.4 V to 75 V
• Available in two tolerance series: ±2% and ±5%

Single Zener Diodes Applications

• General regulation functions
• High-frequency applications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact tolerance grade and marking code. Confirm that the component meets the required thermal and electrical specifications for the intended application environment. Ensure compliance with RoHS directives and check for any automotive qualification requirements if applicable to the design.

Single Zener Diodes Selection Notes

Select this component when a low-profile surface-mount Zener diode is required for voltage regulation or reference applications. The SOT-323 package is suitable for space-constrained designs. Consider the negative temperature coefficient for voltages below approximately 5.6 V when designing circuits sensitive to thermal variations.

Single Zener Diodes Part Context

This part belongs to the Nexperia BZX84W series, which comprises 74 types of voltage regulator diodes. The series offers nominal working voltages ranging from 2.4 V to 75 V in the E24 range. These devices are designed for general-purpose use in various electronic circuits requiring stable voltage references or protection.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other BZX84W-C variants with different nominal voltages. For identical voltage but tighter tolerance, consider the BZX84W-B3V9X variant. Cross-series replacements like the BZX84-C3V9 may require verification of package and power dissipation compatibility.