AZ23B4V7-E3-18

Overview

The AZ23B4V7-E3-18 is a dual common-anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 4.7 V with a tight tolerance of ±2%, tested at a current of 5 mA. The device operates within an ambient temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. Packaged in a compact SOT-23 (TO-236-3) surface-mount housing, it complies with RoHS standards and utilizes the E24 grading standard for voltage selection.

Feature Summary

• Dual common-anode configuration providing two independent Zener elements in a single package
• High precision voltage regulation with ±2% tolerance for stable reference applications
• Robust thermal management capabilities supporting operation up to 150 °C junction temperature
• Compliant with international E24 voltage grading standards for standardized circuit design

Applications

• Precision voltage reference circuits requiring dual regulated rails
• Over-voltage protection stages in sensitive electronic subsystems
• Clamping networks for signal conditioning and transient suppression
• Power supply monitoring and threshold detection logic

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm reel specifications and packaging format. Confirm that the component meets all required environmental compliance standards for the intended deployment region. Ensure that the supplier provides traceable documentation matching the manufacturer's part identification codes.

Selection Notes

Select this variant when a precise ±2% voltage tolerance is mandatory for the application. Verify that the operating environment remains within the specified -55 °C to +150 °C temperature range. Ensure the PCB layout accommodates the SOT-23 footprint and allows for adequate thermal dissipation to maintain power ratings below 300 mW.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V in both ±2% and ±5% tolerances. The AZ23B4V7-E3-18 specifically denotes the 4.7 V version with tight tolerance, commercial grade compliance, and 10,000 units per 13-inch reel packaging.

Replacement Considerations

AZ23B4V7-E3-08: Identical electrical characteristics packaged in 3,000-unit 7-inch reels. AZ23B4V7-G3-18: Same performance profile with updated RoHS marking conventions.