AZ23B11-HE3_A-18

Overview

The AZ23B11-HE3_A-18 is a dual common-anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 11 V with a tight tolerance of ±2%. The device operates within an ambient temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 8.5 V, a dynamic resistance (ZZ) of 20 Ω at the test current of 5 mA, and a temperature coefficient ranging from 5 to 9 x 10⁻⁴/°C. It is packaged in a SOT-23 surface-mount case.

Feature Summary

• Dual common-anode configuration for space-efficient circuit designs
• AEC-Q101 qualified for automotive reliability standards
• High ESD protection capability exceeding 8 kV via human body model
• RoHS-compliant construction without halogenated substances

Applications

• Automotive electronic systems requiring AEC-Q101 compliance
• Voltage reference circuits utilizing dual common-anode topology
• ESD protection stages in sensitive signal lines

Procurement Notes

Verify that the ordering code suffix matches HE3_A-18 to confirm AEC-Q101 qualification and 10,000-unit reel packaging. Ensure the base part number AZ23B11 corresponds to the required ±2% tolerance specification. Cross-reference the manufacturer's datasheet document number 86340 for the most current electrical limits and mechanical dimensions before finalizing procurement orders.

Selection Notes

Select this component when a precise 11 V reference requires ±2% tolerance rather than the standard ±5% available in the 'C' series. The HE3_A suffix indicates automotive-grade qualification, making it suitable for harsh environments where standard commercial grades may not suffice. Verify that the 300 mW power dissipation rating aligns with the thermal design constraints of the target application footprint.

Part Context

This device belongs to the AZ23 Series of small-signal silicon planar Zener diodes. The series offers a wide voltage range from 2.2 V to 75 V. The specific 'B' designation denotes the tighter ±2% voltage tolerance band, while the 'HE3_A' suffix identifies the lead-free, halogen-free variant that meets AEC-Q101 automotive reliability standards.

Replacement Considerations

AZ23B11-E3-18 provides identical electrical parameters but lacks AEC-Q101 automotive qualification. AZ23C11-HE3_A-18 shares the same package and qualification status but has a wider ±5% voltage tolerance.