AZ23B43-HE3-08

Overview

The AZ23B43-HE3-08 is a silicon planar Zener diode from the AZ23 series manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in an SOT-23 package. The nominal Zener voltage is 43 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 50 nA at 32 V and a dynamic resistance of 97 Ω at a test current of 2 mA. The device supports a power dissipation of up to 500 mW, operates within a temperature range of -55 °C to +150 °C, and carries AEC-Q101 qualification.

Feature Summary

• Dual common anode configuration for integrated circuit protection
• High precision voltage grading with ±2% tolerance
• Automotive-grade reliability through AEC-Q101 qualification
• Robust electrostatic discharge protection exceeding 8 kV HBM

Applications

• Voltage reference circuits requiring high stability
• Over-voltage protection for automotive electronic modules
• Clamping applications in sensitive signal processing paths

Procurement Notes

Verify component authenticity by cross-referencing the ordering code against official Vishay documentation. Confirm that the specific suffix indicates AEC-Q101 qualification and RoHS compliance. Ensure the procurement channel provides traceability data consistent with the manufacturer's standards for automotive-grade semiconductor components.

Selection Notes

Select this variant when a precise 43 V regulation point is required alongside strict tolerance limits. The dual common anode structure allows for efficient space utilization in compact designs. Verify that the operating environment remains within the specified thermal boundaries to maintain the rated electrical performance and longevity of the junction.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes designed for surface-mount applications. The series offers a wide range of standardized voltage options graded according to the E24 standard. The HE3 suffix denotes an environmentally compliant product optimized for lead-free soldering processes and automotive industry requirements.

Replacement Considerations

Substitutes must match the 43 V nominal voltage, ±2% tolerance, and dual common anode configuration. Verify that alternative components support the same SOT-23 footprint and meet or exceed the 500 mW power dissipation rating. Ensure any replacement also holds AEC-Q101 certification if used in qualified automotive systems.