BZX84B39-HE3_A-18

Single Zener Diodes Overview

The BZX84B39-HE3_A-18 is a silicon planar Zener diode from Vishay Semiconductors, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 39 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive reliability and operates within a junction temperature range of -55 °C to +150 °C. Electrical characteristics include a maximum reverse leakage current of 0.05 µA at 27.3 V and a dynamic resistance of 130 Ω minimum and 350 Ω maximum at the test current of 2 mA.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive applications
• Tight ±2% Zener voltage tolerance
• ESD protection exceeding 8 kV (HBM) and 800 V (MM)
• RoHS-compliant construction

Single Zener Diodes Applications

• Automotive circuit voltage regulation
• Precision reference voltage generation
• Overvoltage protection circuits

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the specific ordering code matches the required ±2% tolerance and AEC-Q101 qualification status. Ensure storage and handling procedures comply with moisture sensitivity level 1 requirements to maintain soldering integrity during assembly.

Single Zener Diodes Selection Notes

Select this variant when precise voltage regulation is critical due to its narrow ±2% tolerance band compared to standard commercial grades. The AEC-Q101 qualification makes it suitable for environments requiring high reliability and robust ESD performance. Verify that the 39 V nominal rating aligns with the target circuit's breakdown requirements.

Single Zener Diodes Part Context

This component belongs to the BZX84 series of small signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series utilizes silicon planar technology and offers various voltage options graded according to the international E24 standard. The HE3_A suffix indicates RoHS compliance combined with automotive qualification.

Single Zener Diodes Replacement Considerations

Substitute with other BZX84B39 variants if the same electrical specifications are required but different packaging formats are needed. Cross-reference with BZX84B39-E3-08 or BZX84B39-E3-18 for equivalent electrical performance without the HE3_A automotive designation.