AZ23C20-E3-18

Overview

The AZ23C20-E3-18 is a dual common-anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 20 V with a tolerance of ±5%. The device operates at a test current of 5 mA and has a maximum power dissipation of 300 mW on an FR-4 board. Electrical characteristics include a reverse leakage current of 50 µA maximum at 15 V, a dynamic resistance (ZZ) of 50 Ω maximum at the test current, and a temperature coefficient ranging from 8 to 10 x 10⁻⁴/°C. It is housed in a SOT-23 surface-mount package.

Feature Summary

• Dual common-anode configuration for space-efficient circuit designs
• Silicon planar construction ensuring robust performance
• ESD protection capability exceeding 8 kV via human body model

Applications

• Voltage reference circuits requiring dual regulated rails
• Overvoltage protection stages in signal conditioning paths
• Clamping applications in low-power electronic assemblies

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status matches project requirements. Validate that the specific ordering suffix corresponds to the required reel quantity and tape specifications before finalizing procurement orders.

Selection Notes

Select this variant when a 20 V nominal breakdown voltage with standard ±5% tolerance is required. Ensure the application current does not exceed the 5 mA test condition limits. Verify thermal management capabilities align with the 300 mW dissipation rating on standard PCB footprints.

Part Context

This component belongs to the AZ23 series of small signal Zener diodes. The series offers various voltage grades according to the E24 standard. The 'C' designation indicates the ±5% voltage tolerance tier within the product family.

Replacement Considerations

AZ23B20-E3-18 provides equivalent electrical functionality with tighter ±2% voltage tolerance.