AZ23B47-HE3_A-18

Overview

The AZ23B47-HE3_A-18 is a dual common anode silicon planar Zener diode array from the AZ23 series, manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 47 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive applications and operates within a junction temperature range of -55 °C to +150 °C. Packaged in a surface-mount SOT-23 housing, it provides a maximum power dissipation of 300 mW on an FR-4 board and includes high ESD protection capabilities exceeding 8 kV via the human body model.

Feature Summary

• Dual common anode configuration integrating two Zener diodes in a single compact package
• AEC-Q101 qualification ensuring compliance with automotive reliability standards
• High electrostatic discharge robustness rated above 8 kV (HBM) and 800 V (MM)
• RoHS-compliant HE3 technology designed for enhanced environmental sustainability

Applications

• Automotive electronic circuit voltage regulation
• ESD protection networks for sensitive signal lines
• Precision reference voltage generation in dual-channel systems

Procurement Notes

Verify that the ordering suffix matches the required tape and reel specifications. Confirm the component meets specific automotive grade requirements if intended for vehicle integration. Ensure the procurement channel sources genuine Vishay products to guarantee adherence to the published electrical characteristics and RoHS compliance standards.

Selection Notes

Select this part when a dual Zener solution with a 47 V nominal rating and ±2% tolerance is required. The SOT-23 package suits space-constrained designs. Verify that the 300 mW power dissipation limit on standard PCBs aligns with the thermal management strategy of the target application environment.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes. The 'B' designation indicates the tighter ±2% voltage tolerance compared to the standard ±5% 'C' variant. The 'HE3_A' suffix denotes the lead-free, halogen-free construction and AEC-Q101 automotive qualification status.

Replacement Considerations

AZ23B47-E3-18: Commercial grade version without automotive qualification.

FAQ

What is the dynamic resistance of the AZ23B47-HE3_A-18?

The maximum dynamic resistance (ZZ) at the test current IZT1 is 97 Ohms.

How does the marking code appear on the device?

The marking code for the AZ23B47 is DG1.

What is the reverse leakage current specification?

The maximum reverse leakage current (IR) is specified as 0.05 µA at a reverse voltage (VR) of 35 V.