AZ23B15-E3-08

Overview

The AZ23B15-E3-08 is a dual common anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 15 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 0.05 µA at 11 V. Dynamic resistance is specified at 30 Ω, while the temperature coefficient ranges from 7 to 9 x 10⁻⁴/°C. Rated for power dissipation up to 500 mW, it functions reliably across an operating temperature range of -55 °C to +150 °C in a compact SOT-23 package.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single surface-mount package
• High precision grading with ±2% Zener voltage tolerance for accurate voltage regulation applications
• Robust ESD protection capability exceeding 8 kV via human body model and 800 V via machine model

Applications

• Precision voltage reference circuits requiring dual polarity or split-rail supplies
• Over-voltage protection stages in sensitive analog signal paths
• Clamping networks for transient suppression in communication interfaces

Procurement Notes

Verify the specific suffix 'E3' confirms RoHS compliance and commercial grade status when sourcing. Confirm the '-08' suffix indicates the standard 3000-unit reel packaging format. Ensure the ordering code matches the required ±2% tolerance designation ('B') rather than the standard ±5% variant. Cross-reference the manufacturer part number against official Vishay documentation to validate authenticity and revision level before finalizing procurement orders.

Selection Notes

Select this component when precise dual voltage referencing is required in space-constrained designs. The ±2% tolerance makes it suitable for applications demanding tighter accuracy than standard arrays. Consider the low leakage current and defined dynamic resistance for high-impedance circuit interactions. Verify that the SOT-23 thermal characteristics meet the system's power dissipation requirements under worst-case ambient conditions.

Part Context

This device belongs to the AZ23 series of small signal Zener diodes, which offers a wide range of standardized voltages based on the E24 series. The series provides options for both commercial and automotive grades, with the HE3_A suffix denoting AEC-Q101 qualification. The AZ23B15-E3-08 specifically targets high-precision commercial applications where tight voltage tolerances are critical for circuit performance.

Replacement Considerations

Direct parameter-equivalent replacements include other Vishay variants such as AZ23B15-E3-18 (different tape/reel size) or AZ23B15-G3-08. Non-Vishay equivalents must be verified for identical pinout, voltage tolerance, and thermal characteristics.