AZ23B16-HE3-08

Overview

The AZ23B16-HE3-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 16 V with a tight ±2 % tolerance and a maximum power dissipation of 500 mW (300 mW on FR-4). The device is AEC-Q101 qualified for automotive reliability, operates within a -55 °C to +150 °C temperature range, and includes high ESD protection exceeding 8 kV HBM.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact footprint
• AEC-Q101 qualification ensuring compliance with rigorous automotive electronic component standards
• High electrostatic discharge robustness rated at greater than 8 kV human body model and 800 V machine model

Applications

• Automotive circuitry requiring precise voltage reference or clamping under strict reliability standards
• Multi-channel signal conditioning where shared anode topology simplifies PCB routing
• Protection stages for sensitive inputs needing high ESD immunity in space-constrained designs

Procurement Notes

Verify that the specific ordering code matches the required tolerance and qualification level. Confirm the suffix indicates the HE3_A variant for AEC-Q101 compliance and the -08 suffix for the standard 3000-unit reel packaging format. Ensure the procurement documentation explicitly states RoHS compliance and material categorization status as defined by the manufacturer.

Selection Notes

Select this part when a dual Zener array with tighter than standard ±5 % voltage tolerance is required. The HE3 designation confirms the inclusion of automotive-grade qualification and lead-free construction. Verify that the 16 V nominal breakdown voltage aligns with the target circuit's clamping requirements and that the SOT-23 package dimensions fit the available board space.

Part Context

This component belongs to the broader AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages from 2.2 V to 75 V across both commercial and automotive grades. The AZ23B16-HE3-08 specifically represents the 16 V step within the high-precision, automotive-qualified subset of this family.

Replacement Considerations

AZ23B16-E3-08: Commercial grade version lacking AEC-Q101 qualification but sharing identical electrical parameters and pinout.