AZ23B39-HE3-08

Overview

The AZ23B39-HE3-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a SOT-23 surface-mount package. It features a nominal Zener voltage of 39 V with a tight ±2 % tolerance and a maximum dynamic resistance of 87 Ω at a test current of 2 mA. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -55 °C to +150 °C. It is AEC-Q101 qualified for automotive reliability and complies with RoHS standards.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact package
• AEC-Q101 qualification ensuring robust performance under automotive environmental stress conditions
• High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model testing

Applications

• Automotive electronic circuits requiring precise voltage regulation and reference levels
• Protection stages against overvoltage transients in sensitive signal processing lines
• Clamping applications in communication equipment to safeguard downstream components

Procurement Notes

Verify that the ordering code strictly matches AZ23B39-HE3-08 to confirm the specific 39 V rating and ±2 % tolerance. Ensure the HE3 suffix is present to validate AEC-Q101 automotive qualification status. Cross-reference the manufacturer's latest datasheet revision to confirm compliance with current environmental directives before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array with high precision is required in a minimal footprint. The ±2 % tolerance makes it suitable for applications demanding strict voltage accuracy compared to standard commercial grades. Verify that the 39 V breakdown voltage aligns with the circuit's clamping requirements and that the SOT-23 package fits the available board space constraints.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages based on the E24 series. The 'B' designation indicates the tighter ±2 % tolerance grade, while the 'HE3' suffix denotes the lead-free, halogen-free variant that meets automotive reliability standards.

Replacement Considerations

AZ23B39-E3-08 provides identical electrical characteristics but lacks AEC-Q101 automotive qualification. AZ23C39-HE3-08 maintains the automotive grade but reduces the voltage tolerance to ±5 %. Diodes Incorporated AZ23C39-7-F serves as a functional equivalent with standard commercial tolerances.