BZX84B27-HE3_A-08

Single Zener Diodes Overview

The BZX84B27-HE3_A-08 is a silicon planar Zener diode from the Vishay BZX84 series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 27 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive applications and operates within a junction temperature range of -55 °C to +150 °C. Key electrical characteristics include a maximum reverse leakage current of 0.05 µA at 21 V and a dynamic resistance of 80 Ω at a test current of 2 mA.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive reliability requirements
• High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
• Tight voltage tolerance of ±2% for precision regulation
• RoHS-compliant construction using HE3 technology

Single Zener Diodes Applications

• Voltage reference circuits in automotive electronics
• Overvoltage protection for sensitive signal lines
• Clamping applications in high-reliability systems

Single Zener Diodes Procurement Notes

Verify that the specific ordering code includes the HE3 suffix to confirm AEC-Q101 qualification status. Ensure the component matches the required ±2% tolerance grade indicated by the 'B' designation. Confirm RoHS compliance and material categorization details against the latest Vishay documentation before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation is required in space-constrained designs utilizing the SOT-23 footprint. The HE3 variant is specifically intended for environments demanding automotive-grade reliability and enhanced thermal management compared to standard commercial grades.

Single Zener Diodes Part Context

This part 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 a wide range of standardized Zener voltages. The BZX84B27-HE3_A-08 represents the high-precision, automotive-qualified segment of this family.

Single Zener Diodes Replacement Considerations

Substitutes must match the 27 V nominal voltage, ±2% tolerance, SOT-23 package, and AEC-Q101 qualification. Verify that alternative components maintain equivalent dynamic resistance and leakage current specifications to ensure circuit performance parity.