AZ23B24-E3-08

Overview

The AZ23B24-E3-08 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 24 V with a tight tolerance of ±2%. The device operates within a test current range of 2 mA to 5 mA and exhibits a maximum reverse leakage current of 0.05 µA at 18 V. Electrical characteristics include a dynamic resistance (ZZ) of 70 Ω at IZT1 and a temperature coefficient ranging from 8 to 10 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 compact SOT-23 surface-mount package.

Feature Summary

• Dual common anode configuration providing two independent Zener references in a single package
• High precision voltage grading with ±2% tolerance indicated by the 'B' designation
• Robust ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
• RoHS-compliant commercial grade construction without halogenated additives

Applications

• Precision voltage reference circuits requiring dual stable potentials
• Over-voltage protection stages for sensitive signal lines
• Clamping applications in analog signal processing paths
• Biasing networks for transistor amplifier stages

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm tape-and-reel specifications and minimum order quantities. Ensure that the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Cross-reference the manufacturer part number with the latest datasheet revision to validate electrical parameters before finalizing purchase orders.

Selection Notes

Select this component when a dual Zener array with strict ±2% voltage tolerance is required for space-constrained designs. The SOT-23-3 package facilitates automated surface-mount assembly processes. Consider the thermal resistance and power dissipation limits relative to the expected ambient operating conditions to ensure reliable long-term performance in the target application environment.

Part Context

This device belongs to the AZ23 series of small signal silicon planar Zener diodes. The series offers a wide range of standardized Zener voltages from 2.2 V to 75 V according to the E24 standard. Variants are available with either ±5% or ±2% tolerance, catering to different precision requirements while maintaining consistent physical dimensions and mounting characteristics across the product family.

Replacement Considerations

AZ23B24-E3-18

FAQ

What is the marking code for the AZ23B24-E3-08?

The marking code for this component is DF4.

How does the tolerance designation affect the part number?

The letter 'B' in the part number indicates a tighter ±2% Zener voltage tolerance, whereas 'C' would indicate a standard ±5% tolerance.

What is the maximum reverse leakage current specified?

The maximum reverse leakage current is 0.05 µA, measured at a reverse voltage of 18 V.