AZ23B27-HE3_A-08

Overview

The AZ23B27-HE3_A-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a SOT-23 surface-mount package. It features a nominal Zener voltage of 27 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive applications and operates within a temperature range of -55 °C to +150 °C. Electrical characteristics include a maximum reverse leakage current of 50 μA at 20 V and a dynamic resistance of 80 Ω at a test current of 2 mA.

Feature Summary

• Dual common anode configuration providing two independent Zener elements in a single compact package
• AEC-Q101 qualification ensuring reliability for demanding automotive electronic environments
• High ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
• RoHS-compliant manufacturing process utilizing lead-free materials

Applications

• Automotive circuit voltage regulation and reference generation
• Transient voltage suppression in sensitive signal lines
• Over-voltage protection for integrated circuits and microcontrollers
• Clamping applications in high-reliability industrial control systems

Procurement Notes

Verify that the ordering code includes the HE3 suffix to confirm AEC-Q101 automotive qualification. Ensure the B designation is present to guarantee the required ±2% voltage tolerance. Confirm the trailing 08 indicates the standard 3000-unit reel packaging format. Cross-reference the specific datasheet revision against the manufacturer's official documentation before finalizing procurement specifications.

Selection Notes

Select this component when a precise dual Zener solution is required for automotive-grade designs. The ±2% tolerance offers tighter voltage accuracy compared to standard commercial grades. Verify that the 300 mW power dissipation rating on an FR-4 board meets the thermal requirements of the target application. Consider the low leakage current specifications for high-impedance circuit interfaces.

Part Context

This part belongs to the broader AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series encompasses various voltage ratings from 2.2 V to 75 V across different tolerance grades. The AZ23B27 variant specifically targets applications requiring stable 27 V regulation with strict automotive quality standards.

Replacement Considerations

AZ23B27-E3-08: Commercial grade equivalent lacking AEC-Q101 qualification. AZ23B27-G3-08: Alternative RoHS-compliant version without specified automotive testing. AZ23B27-E3-18: Identical electrical parameters but packaged in 10,000-unit reels.