AZ23B12-E3-18

Overview

The AZ23B12-E3-18 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 12 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 9 V. Dynamic resistance is specified at 20 Ω, while the temperature coefficient ranges from 6 to 9 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports power dissipation up to 300 mW on FR-4 boards 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
• High precision voltage grading with ±2% tolerance for stable reference applications
• Robust ESD protection capability exceeding 8 kV via human body model standards
• RoHS-compliant commercial grade construction suitable for automated surface mount assembly

Applications

• Precision voltage reference circuits requiring dual supply rails
• Overvoltage protection stages in sensitive signal processing paths
• Clamping networks for transient suppression in communication interfaces

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm RoHS compliance status and AEC-Q101 qualification requirements against specific project constraints. Ensure ordering suffixes match exact packaging quantities and tape specifications. Validate datasheet revisions prior to final design freeze to maintain technical accuracy throughout the production lifecycle.

Selection Notes

Select this variant when strict ±2% voltage tolerance is mandatory for circuit stability. The dual common anode topology simplifies layout compared to discrete components. Verify thermal management capabilities align with expected ambient conditions and power dissipation limits. Consider dynamic resistance characteristics for high-frequency noise sensitivity in the target application environment.

Part Context

This component belongs to the AZ23 series of small signal silicon planar Zener diodes. The series offers graded voltages according to international E24 standards. Variants are available with different tolerance grades and packaging options to suit diverse industrial and consumer electronics requirements.

Replacement Considerations

AZ23B12-E3-08 serves as a parameter-equivalent alternative with identical electrical characteristics but differs in reel packaging quantity.