AZ23B27-HE3_A-18

Overview

The AZ23B27-HE3_A-18 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 27 V with a tight tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and dissipates up to 500 mW on lead clamping or 300 mW on FR-4 boards. It is AEC-Q101 qualified for automotive reliability and offers high ESD protection exceeding 8 kV (HBM) and 800 V (MM).

Feature Summary

• AEC-Q101 qualified for automotive applications.
• Dual common-anode configuration in a compact SOT-23 package.
• High electrostatic discharge (ESD) capability per AEC-Q101 standards.
• RoHS-compliant construction.

Applications

• Automotive voltage regulation circuits.
• Transient voltage suppression in sensitive electronics.
• Reference voltage generation in signal conditioning.

Procurement Notes

Verify that the ordering suffix HE3_A confirms AEC-Q101 qualification and RoHS compliance. Confirm the B designation indicates the required ±2% voltage tolerance. Ensure the -18 suffix matches the intended reel packaging quantity of 10,000 units. Cross-reference the specific datasheet revision against current manufacturing notices.

Selection Notes

Select this component when a precise 27 V reference is needed in a space-constrained design requiring automotive-grade reliability. The dual common-anode structure allows for efficient layout in differential or multi-rail applications. Verify that the dynamic resistance and leakage current specifications meet the circuit requirements at the operating test current.

Part Context

This part belongs to the AZ23 series of small-signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series provides various voltage grades and tolerances in the SOT-23 footprint. The HE3_A suffix specifically denotes the automotive-qualified, lead-free variant within this family.

Replacement Considerations

AZ23B27-E3-18