AZ23C18-E3-08

Overview

The AZ23C18-E3-08 is a dual common anode silicon planar Zener diode array from Vishay Semiconductors, housed in a surface-mount SOT-23 package. It provides two independent Zener references with a nominal voltage of 18 V and a tolerance of ±5%. The device operates within a junction temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. Electrical characteristics include a maximum reverse leakage current of 50 nA at 14 V and a dynamic resistance of 45 Ω at the test current of 5 mA.

Feature Summary

• Dual common anode configuration for space-efficient circuit designs
• Silicon planar technology ensuring stable voltage regulation
• ESD protection capability exceeding 8 kV via human body model

Applications

• Voltage reference circuits requiring dual polarity or split supplies
• Overvoltage protection stages in signal conditioning paths
• Clamping applications in digital logic interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape and reel specifications. The '-08' designation indicates units per reel quantity and packaging format. Confirm RoHS compliance status and material categorization details directly from the datasheet before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array with a common anode topology is required in a compact SOT-23 footprint. Ensure the 18 V nominal voltage aligns with the target clamping or reference requirements. Verify that the ±5% tolerance meets the circuit precision needs and that the thermal dissipation limits are sufficient for the intended operating environment.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series offers a wide range of standardized Zener voltages graded according to the E24 standard. The 'C' suffix denotes the standard ±5% voltage tolerance variant within the product family.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes listed in distributor databases include AZ23C18-E3-08 and AZ23C18-G3-08.