AZ23B22-HE3_A-08

Overview

The AZ23B22-HE3_A-08 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in a SOT-23 surface-mount package. The nominal Zener voltage is 22 V with a tight tolerance of ±2%. Electrical characteristics include a maximum dynamic resistance of 55 Ohms at a test current of 5 mA and a reverse leakage current of 50 µA at 17 V. The device is AEC-Q101 qualified for automotive applications, operates within a temperature range of -55°C to +150°C, and supports a maximum power dissipation of 300 mW on an FR-4 board.

Feature Summary

• Dual common anode Zener diode array providing two independent voltage references in a single compact package.
• Automotive-grade qualification compliant with AEC-Q101 standards for enhanced reliability.
• High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model.
• RoHS-compliant construction utilizing advanced HE3 technology.

Applications

• Voltage reference circuits in automotive electronic control units.
• Over-voltage protection stages in vehicle infotainment systems.
• Signal conditioning and clamping in automotive sensor interfaces.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the tape-and-reel quantity and packaging format. Ensure that the procurement channel sources genuine components directly from authorized distributors or the manufacturer to guarantee authenticity and traceability. Cross-reference the part number with the latest datasheet revision to validate compliance with current environmental and quality standards before finalizing orders.

Selection Notes

Select this component when a precise 22 V reference with ±2% tolerance is required in a space-constrained design. The AEC-Q101 qualification makes it suitable for automotive environments where high reliability and ESD robustness are mandatory. Consider the thermal resistance and power dissipation limits relative to the expected operating ambient temperature and PCB footprint to ensure stable performance under load conditions.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V in a standardized SOT-23 package. The 'HE3' designation indicates RoHS-compliant Green Package technology, while the '_A' suffix typically denotes automotive-grade qualification. This specific variant provides a balanced solution for precision voltage regulation in demanding applications.

Replacement Considerations

AZ23B22-E3-08

FAQ

What is the difference between the AZ23C22 and AZ23B22 series?

The primary difference is the voltage tolerance. The AZ23C22 series has a standard tolerance of ±5%, whereas the AZ23B22 series offers a tighter tolerance of ±2%.

Is the AZ23B22-HE3_A-08 suitable for high-temperature automotive environments?

Yes, the device is AEC-Q101 qualified and rated for an operating junction temperature up to 150°C, making it suitable for automotive applications.

What does the 'HE3' suffix indicate in the part number?

The 'HE3' suffix indicates that the device is manufactured using Vishay's Green Plastic Technology, which is RoHS compliant and halogen-free.