AZ23B4V3-G3-18

Overview

The AZ23B4V3-G3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23-G series, housed in a SOT-23 surface-mount package. It provides two independent Zener diodes sharing a common anode terminal. The nominal Zener voltage is 4.3 V with a tight tolerance of ±2%, specified at a test current of 5 mA. Key electrical parameters include a maximum reverse leakage current of 3 μA and a dynamic resistance of 90 Ω at the test current. The device operates within a temperature range of -55 °C to +150 °C and dissipates up to 300 mW on a standard FR-4 board.

Feature Summary

• Dual common anode configuration for space-efficient circuit design
• High precision voltage regulation with ±2% tolerance grading
• Robust ESD protection exceeding 8 kV human body model standards
• Green commercial grade construction compliant with RoHS directives

Applications

• Precision voltage reference circuits requiring dual rails
• Over-voltage protection stages in signal conditioning paths
• Clamping applications in high-speed digital interfaces
• Voltage threshold detection in battery management systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm reel size and tape specifications. Confirm that the component meets the required environmental compliance standards for the target application. Ensure that the sourcing channel provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a dual Zener array with tight voltage tolerance is required in a compact footprint. The ±2% tolerance variant is suitable for precision analog applications where voltage accuracy is critical. Consider the thermal resistance characteristics when designing for high ambient temperatures or limited airflow conditions.

Part Context

This part belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of Zener voltages from 2.2 V to 75 V in both ±5% and ±2% tolerance grades. The AZ23B4V3-G3-18 specifically denotes the 4.3 V, ±2% tolerance version packaged in a 10,000-unit reel format.

Replacement Considerations

Direct parameter-equivalent replacements within the same family include AZ23B4V3-E3-18 and AZ23B4V3-G3-08. Verify pinout compatibility and thermal performance before substituting components from other manufacturers.