AZ23C12-HE3_A-18

Overview

The AZ23C12-HE3_A-18 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 12 V with a ±5% tolerance and a maximum dynamic resistance of 20 Ω at a test current of 5 mA. The device has a maximum reverse leakage current of 0.1 μA and operates within a temperature range of -55 °C to +150 °C. It is AEC-Q101 qualified for automotive applications and supplied in tape-and-reel packaging.

Feature Summary

• Dual common anode configuration for space-efficient circuit design
• AEC-Q101 qualification ensuring reliability in automotive environments
• ESD protection capability exceeding 8 kV via human body model

Applications

• Automotive electronic systems requiring robust voltage regulation
• General-purpose voltage reference circuits
• Overvoltage protection stages in signal conditioning paths

Procurement Notes

Verify that the ordering code matches the specific suffix requirements for automotive grade (HE3_A) and reel quantity (18). Confirm RoHS compliance status and material categorization details directly with the manufacturer or authorized distributors before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array with common anode topology is required in a compact SOT-23 footprint. Ensure the 12 V nominal voltage aligns with system requirements and verify that the 300 mW power dissipation limit on an FR-4 board meets thermal constraints.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers various voltage grades according to the E24 standard and includes both commercial and automotive qualified variants packaged in SOT-23 enclosures.

Replacement Considerations

Direct substitutes include other AZ23C12 variants such as AZ23C12-E3-18 or AZ23C12-G3-18, though these lack AEC-Q101 qualification. Cross-manufacturer equivalents must be verified for pinout compatibility and electrical parameter alignment.