AZ23B4V7-E3-08

Overview

The AZ23B4V7-E3-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series. It provides two independent Zener diodes sharing a common anode within a compact SOT-23 surface-mount package. The nominal Zener voltage is 4.7 V with a tight ±2% tolerance, tested at a current of 5 mA. Key electrical characteristics include a maximum reverse leakage current of 1 µA and a dynamic resistance of 78 Ω. The device operates across a temperature range of -55 °C to +150 °C and supports a power dissipation of up to 300 mW on an FR-4 board.

Feature Summary

• Dual common anode configuration for space-efficient circuit design
• Tight ±2% voltage tolerance for precision regulation applications
• High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
• RoHS-compliant commercial grade construction

Applications

• Voltage reference circuits requiring precise dual rails
• Input protection stages in signal conditioning modules
• Clamping networks in high-speed digital interfaces

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number against official Vishay documentation. Confirm that the ordering suffix matches the required tape-and-reel packaging specifications. Ensure compliance with RoHS directives and material categorization standards before finalizing procurement orders.

Selection Notes

Select this variant when a dual Zener array with a 4.7 V nominal rating and strict ±2% tolerance is required. The SOT-23 package suits automated surface-mount assembly processes. Verify that the 300 mW thermal dissipation limit aligns with the specific ambient operating conditions of the target application.

Part Context

This component belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers a wide range of voltages from 2.2 V to 75 V. Variants are available with either ±5% or ±2% tolerances, distinguished by the 'C' or 'B' designation in the part number respectively.

Replacement Considerations

AZ23C4V7-E3-08: Offers identical physical dimensions but features a wider ±5% voltage tolerance instead of the tighter ±2% specification found in the B-series variant.