AZ23C3V9-HE3-18

Overview

The AZ23C3V9-HE3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It features a nominal Zener voltage of 3.9 V with a ±5% tolerance and a test current of 5 mA. The device has a maximum reverse leakage current of 3 µA at 1 V and a dynamic resistance of 90 Ω at 5 mA. It operates within a temperature range of -55 °C to +150 °C and is AEC-Q101 qualified for automotive applications.

Feature Summary

• Dual Zener diodes integrated in a single common anode configuration
• AEC-Q101 qualified for automotive reliability standards
• ESD protection capability exceeding 8 kV via human body model

Applications

• Automotive electronic circuits requiring voltage reference or clamping
• Protection against electrostatic discharge (ESD) events
• Voltage regulation in compact surface-mount designs

Procurement Notes

Verify the specific ordering code suffix to confirm tape and reel specifications. Ensure the component meets RoHS compliance requirements for your manufacturing process. Confirm that the AEC-Q101 qualification aligns with your project's automotive grade standards before finalizing procurement.

Selection Notes

Select this part when a dual Zener array with a common anode is required in an SOT-23 footprint. The 3.9 V nominal voltage suits low-voltage reference applications. Verify that the 300 mW power dissipation on an FR-4 board meets the thermal requirements of the target circuit design.

Part Context

This component belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers various voltage grades according to the E24 standard. The HE3_A suffix indicates AEC-Q101 qualification, while the -18 suffix specifies the 10,000 units per reel packaging format.

Replacement Considerations

AZ23C3V9-HE3_A-18 is a confirmed equivalent part number within the same manufacturer's lineup.