AZ23B18-HE3_A-08

Overview

The AZ23B18-HE3_A-08 is a dual common anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a tight tolerance of ±2%. The device operates within a temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. It is AEC-Q101 qualified for automotive applications, housed in a compact SOT-23 package, and supplied in tape-and-reel format.

Feature Summary

• Dual common anode configuration providing two independent Zener channels in a single package
• AEC-Q101 qualification ensuring compliance with automotive electronic component standards
• High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model
• Tight voltage tolerance of ±2% for precise reference and regulation applications

Applications

• Automotive circuit voltage clamping and protection
• Precision voltage reference generation in dual-channel designs
• Electrostatic discharge (ESD) suppression in sensitive signal lines

Procurement Notes

Verify the specific ordering suffix HE3_A-08 to confirm AEC-Q101 automotive qualification and 3000-unit reel packaging. Ensure the B designation matches the required ±2% voltage tolerance. Cross-reference the manufacturer part number against official Vishay documentation to validate current production status and RoHS3 compliance before finalizing procurement orders.

Selection Notes

Select this component when a dual common anode topology is required for space-constrained designs. The ±2% tolerance suits precision applications where standard 5% variants are insufficient. Verify that the 300 mW power dissipation rating on FR-4 meets the thermal requirements of the target environment. Confirm compatibility with the SOT-23 footprint during PCB layout.

Part Context

This device belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V. The AZ23B18 variant specifically targets applications requiring tighter voltage accuracy compared to the standard AZ23C series. The HE3_A suffix denotes the automotive-grade, lead-free version of the component.

Replacement Considerations

AZ23B18-E3-08: Commercial grade equivalent without AEC-Q101 qualification. AZ23B18-G3-08: Alternative commercial grade option. AZ23C18-HE3_A-08: Automotive grade but with wider ±5% voltage tolerance.