AZ23C51-E3-18

Overview

The AZ23C51-E3-18 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a common anode configuration with two independent diodes housed in a SOT-23 package. The nominal Zener voltage is 51 V, with a tolerance of ±5%. Electrical characteristics include a maximum reverse leakage current of 0.05 µA at 38 V and a dynamic resistance of 100 Ω at a test current of 2 mA. The device supports a power dissipation of up to 500 mW and operates within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual-channel common anode architecture for compact circuit integration
• Silicon planar construction ensuring stable voltage regulation
• High ESD protection capability exceeding 8 kV via human body model

Applications

• Voltage reference circuits requiring dual regulated rails
• Over-voltage protection stages in signal processing paths
• Clamping applications in high-speed digital interfaces

Procurement Notes

Verify the specific ordering code suffix against project requirements. The '-E3' designation confirms RoHS compliance for commercial grade usage. Confirm that the '-18' suffix aligns with the required tape and reel packaging specifications for automated assembly processes.

Selection Notes

Select this component when a dual-diode solution is necessary within a limited footprint. Ensure the application current does not exceed the 2 mA test condition limits for optimal voltage accuracy. Verify thermal management capabilities if operating near the upper junction temperature limit.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes. The series offers various voltage grades according to the E24 standard. The 'C' in the part number indicates the standard ±5% tolerance level available for general-purpose applications.

Replacement Considerations

AZ23B51-E3-18 provides a tighter ±2% tolerance variant within the same package.