AZ23B20-E3-08

Overview

The AZ23B20-E3-08 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 20 V with a tight tolerance of ±2%. The device operates within a test current range of 1 to 5 mA and exhibits a maximum reverse leakage current of 0.05 µA at 15 V. Dynamic resistance is specified at 50 Ω, while the temperature coefficient ranges from 8 to 10 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports power dissipation up to 500 mW and functions reliably across an operating temperature range of -55 °C to +150 °C.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single compact package
• Tight voltage tolerance of ±2% ensures high precision regulation performance
• ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
• RoHS-compliant commercial grade construction without automotive qualification

Applications

• Precision voltage reference circuits requiring dual channels
• Overvoltage protection stages in signal conditioning paths
• Clamping applications in sensitive analog input interfaces

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the ordering suffix matches the required tape and reel specifications for automated assembly processes. Ensure compliance with RoHS directives and material categorization standards before integration into final products.

Selection Notes

Select this variant when strict ±2% voltage accuracy is mandatory compared to standard ±5% options. Evaluate thermal management requirements against the 500 mW absolute maximum rating. Consider the specific dynamic resistance characteristics for noise-sensitive designs where lower impedance might be preferable.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes designed for general-purpose voltage regulation tasks. The series offers a wide range of breakdown voltages from 2.2 V to 75 V. The 'B' designation specifically indicates the tighter manufacturing tolerance band available within this product family.

Replacement Considerations

AZ23B20-E3-18 provides identical electrical characteristics but utilizes a different packaging format suitable for alternative handling equipment.