AZ23C4V7-HE3_A-08

Overview

The AZ23C4V7-HE3_A-08 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It features a dual common anode configuration with a nominal Zener voltage of 4.7 V and a tolerance of ±5%. 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 and offers high ESD protection exceeding 8 kV (HBM). Electrical characteristics include a maximum reverse leakage current of 3 µA at 5 V and a dynamic resistance of 78 Ω at a test current of 5 mA.

Feature Summary

• Dual common anode configuration integrating two Zener diodes in a single compact surface-mount package
• Automotive-grade qualification compliant with AEC-Q101 standards for enhanced reliability
• High electrostatic discharge robustness exceeding 8 kV via human body model testing

Applications

• Voltage reference circuits requiring stable dual polarity or split-rail supplies
• Overvoltage protection stages in automotive electronic control units
• Clamping applications in industrial sensor signal conditioning

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the tape-and-reel quantity and packaging format. Ensure that the component's AEC-Q101 qualification status aligns with the target application's environmental and reliability requirements before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener solution is required in a minimal footprint. The ±5% voltage tolerance suits general-purpose regulation tasks. Verify that the 300 mW power dissipation limit on standard PCB footprints meets the thermal design constraints of the intended circuit environment.

Part Context

This part belongs to the Vishay AZ23 series of small-signal Zener diodes. The series provides various voltage grades according to the E24 standard. The HE3_A suffix specifically denotes RoHS compliance combined with AEC-Q101 automotive qualification, distinguishing it from commercial grade variants.

Replacement Considerations

Direct substitutes within the same series include AZ23C4V7-E3-08 (commercial grade) or AZ23B4V7-HE3_A-08 (±2% tolerance). Cross-manufacturer replacements must match the SOT-23-3 package, 4.7 V nominal voltage, and dual common anode configuration.