AZ23C2V4-HE3_A-18

Overview

The AZ23C2V4-HE3_A-18 is a silicon planar Zener diode from Vishay Semiconductors, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 2.4 V with a ±5 % tolerance and operates at a test current of 5 mA. The device has a maximum reverse leakage current of 1 μA and a dynamic resistance of 100 Ω. It is AEC-Q101 qualified for automotive applications, supports a power dissipation of 300 mW on FR-4 boards, and functions within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration for flexible circuit integration
• ESD protection exceeding 8 kV via human body model and 800 V via machine model
• Automotive-grade qualification compliant with AEC-Q101 standards

Applications

• Voltage reference circuits requiring stable low-voltage regulation
• Clamping and protection stages in automotive electronic modules
• General-purpose signal conditioning in industrial control systems

Procurement Notes

Verify the specific ordering code suffix against official distributor catalogs to confirm reel size and tape specifications. Ensure that the HE3_A designation matches the required AEC-Q101 qualification level for your target application environment. Cross-reference the manufacturer's latest datasheet revision to validate any updates to electrical characteristics or marking codes before finalizing procurement orders.

Selection Notes

Select this component when a dual common anode topology is required for precise voltage referencing or clamping. The 2.4 V nominal rating suits low-voltage logic interfaces. Verify that the 100 Ω dynamic resistance meets the noise sensitivity requirements of the design. Confirm that the SOT-23 footprint aligns with the PCB layout constraints and thermal management strategy.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of graded Zener voltages from 2.2 V to 75 V. The HE3_A suffix indicates RoHS compliance and automotive qualification, distinguishing it from commercial grade variants which lack the rigorous reliability testing mandated by AEC-Q101 standards.

Replacement Considerations

Direct substitutes include other AZ23C2V4 variants with different packaging or tolerance levels, such as AZ23C2V4-E3-08. Verify pinout compatibility and thermal resistance parameters when considering cross-manufacturer alternatives.