AZ23B3V3-HE3-18

Overview

The AZ23B3V3-HE3-18 is a dual common-anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 3.3 V with a tight tolerance of ±2%, indicated by the 'B' designation in the part number. The device operates within an ambient temperature range of -55°C to +150°C and is housed in a compact SOT-23 surface-mount package. Electrical characteristics include a maximum reverse leakage current of 5 µA at 1 V and a dynamic resistance of 95 Ω measured at a test current of 5 mA. This component is AEC-Q101 qualified for automotive applications and supplied in taped reels of 10,000 units.

Feature Summary

• Dual common-anode configuration providing two independent Zener references in a single package
• Tight voltage tolerance of ±2% for precise reference applications
• Automotive-grade qualification compliant with AEC-Q101 standards
• ESD protection capability exceeding 8 kV via human body model

Applications

• Precision voltage reference circuits requiring dual channels
• Automotive electronic systems demanding high reliability
• Over-voltage protection stages in sensitive signal paths

Procurement Notes

Verify that the ordering code matches the required tolerance and packaging format. Confirm the suffix indicates AEC-Q101 qualification if automotive grade is mandatory. Ensure the reel quantity aligns with production requirements before finalizing orders.

Selection Notes

Select this variant when a ±2% voltage tolerance is strictly required instead of the standard ±5%. Verify that the 3.3 V nominal output meets the circuit design specifications. Consider the SOT-23 footprint constraints during PCB layout planning.

Part Context

This component belongs to the AZ23 series of small-signal silicon planar Zener diodes. The series offers a wide range of standardized voltages from 2.2 V to 75 V. The specific HE3_A suffix denotes RoHS compliance combined with automotive qualification, distinguishing it from commercial grade E3 variants.

Replacement Considerations

AZ23B3V3-E3-18 provides identical electrical performance but lacks AEC-Q101 automotive qualification.