AZ23B2V2-HE3_A-18

Overview

The Vishay AZ23B2V2-HE3_A-18 is a dual common anode silicon planar Zener diode array housed in an SOT-23 package. It features a nominal Zener voltage of 2.2 V with a tight tolerance of ±2%. The device operates within a temperature range of -55 °C to +150 °C and is qualified under AEC-Q101 standards for automotive applications. Electrical characteristics include a maximum reverse leakage current of 1 µA at 1 V, a dynamic resistance (ZZ) of 120 Ω at the test current of 5 mA, and a negative temperature coefficient ranging from -9 to -4 x 10⁻⁴/°C.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact surface-mount footprint.
• AEC-Q101 qualification ensuring compliance with rigorous automotive reliability and quality standards.
• High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model and 800 V via machine model.

Applications

• Automotive electronic circuits requiring precise voltage reference or regulation.
• Protection against overvoltage transients in sensitive signal lines.
• Clamping applications in low-voltage digital logic interfaces.

Procurement Notes

Verify that the specific ordering code matches the required tolerance and packaging format. Confirm that the HE3_A suffix indicates AEC-Q101 qualification and RoHS compliance. Ensure the reel quantity aligns with production requirements before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener configuration is necessary within space-constrained designs. The ±2% tolerance makes it suitable for precision applications where standard 5% devices are insufficient. Verify that the operating current remains within the specified limits to maintain accurate voltage regulation.

Part Context

This part belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers a wide range of voltages from 2.2 V to 75 V in both single and dual configurations. The B designation specifically denotes the tighter ±2% voltage tolerance compared to the standard C grade.

Replacement Considerations

Direct replacements must match the dual common anode configuration, SOT-23 package, and AEC-Q101 qualification. Verify that substitute parts meet the same ±2% tolerance and electrical parameters to ensure circuit compatibility without redesign.

FAQ

What does the 'B' designation indicate in the part number?

The 'B' indicates a standard Zener voltage tolerance of ±2%, which is tighter than the ±5% tolerance associated with the 'C' designation.

Is this component suitable for automotive environments?

Yes, the HE3_A suffix confirms that the device is AEC-Q101 qualified, making it suitable for automotive applications.

What is the ESD rating for this device?

The device provides ESD protection greater than 8 kV according to the human body model and greater than 800 V according to the machine model.