AZ23B3V6-HE3-18

Overview

The AZ23B3V6-HE3-18 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 3.6 V with a tight ±2% tolerance and a maximum dynamic resistance of 90 Ω at a test current of 5 mA. The device is AEC-Q101 qualified for automotive reliability and supports a junction temperature up to 150 °C. Electrical characteristics include a reverse leakage current of 1 μA maximum at 1 V, ensuring low standby power consumption.

Feature Summary

• Dual common anode configuration integrates two Zener diodes into a single compact footprint.
• AEC-Q101 qualification ensures robust performance under automotive environmental stress conditions.
• High ESD protection capability exceeding 8 kV via human body model standards.

Applications

• Automotive circuitry requiring precise voltage clamping and reference levels.
• Protection of sensitive input lines against electrostatic discharge events.
• Voltage regulation within space-constrained surface-mount assemblies.

Procurement Notes

Verify that the ordering code suffix matches the required tape-and-reel quantity of 10,000 units on a 13-inch reel. Confirm the HE3_A suffix indicates the specific AEC-Q101 qualified variant rather than the commercial grade. Ensure the B designation is present to guarantee the tighter ±2% voltage tolerance specification.

Selection Notes

Select this component when a dual-channel solution is necessary to save board space compared to discrete packages. The 3.6 V rating suits applications needing stable references near standard logic thresholds. Verify that the 90 Ω dynamic impedance meets the ripple rejection requirements of the target circuit design.

Part Context

This part belongs to the broader AZ23 family of small signal Zener diodes available in various voltage grades. While other variants offer different tolerances or voltages, the HE3_A suffix specifically denotes the automotive-grade version compliant with AEC-Q101 standards. The SOT-23 package provides a standardized mounting profile compatible with automated pick-and-place manufacturing processes.

Replacement Considerations

AZ23B3V6-E3-18

FAQ

What is the difference between the AZ23B3V6-E3-18 and AZ23B3V6-HE3-18?

The AZ23B3V6-HE3-18 is AEC-Q101 qualified for automotive applications, whereas the AZ23B3V6-E3-18 is a commercial grade device without this specific automotive qualification.

How does the 'B' in the part number affect performance?

The 'B' indicates a tightened Zener voltage tolerance of ±2%, providing higher precision compared to the standard ±5% tolerance found in parts designated with 'C'.