AZ23C4V3-HE3-08

Overview

The AZ23C4V3-HE3-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It provides a nominal Zener voltage of 4.3 V with a ±5% tolerance and operates at a test current of 5 mA. The device features a maximum reverse leakage current of 1 µA and a dynamic resistance of 90 Ω. Qualified under AEC-Q101 standards for automotive applications, it supports a junction temperature up to 150 °C and offers ESD protection exceeding 8 kV via the human body model.

Feature Summary

• Dual common anode configuration within a compact SOT-23 surface-mount package
• AEC-Q101 qualified for automotive reliability requirements
• High electrostatic discharge robustness exceeding 8 kV (HBM) and 800 V (MM)
• Zener voltages graded according to the international E24 standard

Applications

• Automotive electronic circuits requiring AEC-Q101 compliance
• Voltage reference and regulation in low-power systems
• ESD protection for sensitive signal lines
• Clamping applications in consumer electronics

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the ordering suffix matches the specific HE3_A variant to ensure AEC-Q101 qualification status. Review the latest datasheet revision for any updates to electrical characteristics or marking codes before finalizing procurement specifications.

Selection Notes

Select this part when a dual common anode Zener array is required in an SOT-23 footprint. Ensure the 4.3 V nominal voltage aligns with circuit design needs. Verify thermal management capabilities against the specified power dissipation limits on FR-4 boards. Consider the ±5% tolerance if tighter voltage accuracy is not critical for the application.

Part Context

This component belongs to the Vishay AZ23 series of small signal Zener diodes. The series includes various voltage options ranging from 2.2 V to 75 V. The 'C' designation indicates a standard ±5% tolerance, while the 'HE3' suffix denotes a lead-free and halogen-free compliant version suitable for environmentally conscious manufacturing processes.

Replacement Considerations

Direct replacements include other AZ23 series variants with identical pinouts but different voltage ratings. Cross-brand equivalents must match the SOT-23 package dimensions, dual common anode configuration, and AEC-Q101 qualification status to ensure functional compatibility.