AZ23B11-E3-18

Overview

The AZ23B11-E3-18 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 a test current range of 2 to 5 mA and exhibits a maximum reverse leakage current of 0.1 µA at 8.5 V. Electrical characteristics include a dynamic resistance (ZZ) of 20 Ω and a temperature coefficient ranging from 5 to 9 x 10⁻⁴/°C. Rated for a maximum power dissipation of 300 mW on an FR-4 board, it functions reliably across an operating temperature range of -55 °C to +150 °C in a surface-mount SOT-23 package.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact package
• High precision voltage grading with ±2% tolerance for stable reference applications
• Robust thermal performance supporting up to 300 mW power dissipation on standard PCB footprints
• Extended industrial temperature operation capability spanning -55 °C to +150 °C

Applications

• Precision voltage reference circuits requiring dual rails
• Over-voltage protection stages for sensitive signal lines
• Clamping networks in high-speed digital interfaces
• Bias stabilization in analog sensor conditioning modules

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape-and-reel specifications and quantity per reel. Ensure that the component meets all relevant RoHS compliance requirements for your target market. Cross-reference the exact part number with authorized distributors to confirm current availability status and lead times before finalizing procurement plans.

Selection Notes

Select this variant when a strict ±2% voltage tolerance is required compared to the standard ±5% 'C' series. Confirm that the 11 V breakdown voltage aligns with the circuit's clamping or reference needs. Verify that the SOT-23 package dimensions fit the available PCB real estate. Check if AEC-Q101 automotive qualification is necessary, as this commercial grade part does not inherently carry that certification without specific HE3_A suffixes.

Part Context

This component belongs to the AZ23 Series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of standardized voltages from 2.2 V to 75 V. The 'B' designation indicates the tighter ±2% tolerance grade, while the '-E3-18' suffix specifies the RoHS-compliant commercial version packaged in 10,000-unit reels. This family is designed for general-purpose voltage regulation and protection tasks.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include AZ23B11-E3-08 and AZ23B11-G3-18 from Vishay General Semiconductor - Diodes Division.