AZ23C12-HE3-08

Overview

The AZ23C12-HE3-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a surface-mount SOT-23 package. It provides two independent voltage regulation channels sharing a common anode terminal. The nominal Zener voltage is 12 V with a standard tolerance of ±5 %. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 9 V and a dynamic resistance of 20 Ω at a test current of 5 mA. The device supports a junction temperature up to 150 °C and is qualified under AEC-Q101 standards for automotive applications.

Feature Summary

• Dual common anode configuration providing two independent Zener channels within a single compact SOT-23 footprint.
• AEC-Q101 qualification ensuring suitability for demanding automotive electronic environments.
• Silicon planar technology designed for robust performance and high reliability.
• ESD protection capability exceeding 8 kV via human body model and 800 V via machine model.

Applications

• Automotive circuit voltage clamping and reference generation
• Protection of sensitive input lines against transient overvoltage events
• Dual-channel voltage regulation in space-constrained surface mount designs

Procurement Notes

Verify that the ordering code matches the specific suffix requirements for your application. Confirm the HE3 designation indicates AEC-Q101 qualification rather than commercial grade. Ensure the -08 suffix aligns with the required reel quantity of 3000 units on an 8 mm tape. Cross-reference the manufacturer's latest documentation to confirm current production status and compliance details before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array with a shared anode is required in a small SOT-23 package. The 12 V nominal rating suits applications needing precise voltage referencing or clamping near that threshold. Verify that the ±5 % tolerance meets the circuit design specifications. Consider the thermal resistance values if operating near the maximum junction temperature limits in enclosed spaces.

Part Context

This part belongs to the broader AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers various voltage ratings ranging from 2.2 V to 75 V in both single and dual configurations. The AZ23C12 variant specifically targets the 12 V segment of the E24 standard voltage grading scale.

Replacement Considerations

Direct substitutes within the same family include AZ23C12-E3-08 (commercial grade) or AZ23B12-HE3-08 (±2 % tolerance). Other manufacturers offering equivalent SOT-23 dual common anode Zener arrays should be evaluated based on matching electrical parameters and physical dimensions.