AZ23C51-7-F

Overview

The AZ23C51-7-F is a dual surface mount Zener diode array from Diodes Incorporated, housed in an SOT-23 package. It features a common anode configuration with two independent silicon junctions. The nominal Zener voltage ranges from 48V to 54V at a test current of 5.0mA. Maximum power dissipation is rated at 300mW, with a typical thermal resistance of 417°C/W. Electrical characteristics include a maximum Zener impedance (ZZT) of 100Ω and a typical temperature coefficient of +0.110%/°C. The device operates within a temperature range of -65°C to +150°C and meets RoHS compliance standards.

Feature Summary

• Dual Zener diodes integrated into a single compact SOT-23 package for space-efficient designs.
• Common anode configuration allows for simplified circuit topology compared to separate components.
• Qualified to AEC-Q101 standards with high ESD protection ratings for automotive reliability.
• Manufactured using lead-free, halogen-free, and antimony-free materials compliant with environmental directives.

Applications

• Voltage reference circuits requiring stable dual supply rails.
• Over-voltage protection stages in automotive electronic control units.
• Clamping applications in industrial signal conditioning interfaces.

Procurement Notes

Verify the specific ordering suffix '-7-F' corresponds to commercial grade qualification and tape & reel packaging containing 3,000 units per carrier. Confirm that the component meets the required AEC-Q101 reliability standards if deployed in automotive environments. Ensure the selected variant aligns with the intended operating temperature range and power dissipation constraints defined in the datasheet thermal characteristics.

Selection Notes

Select this component when a dual Zener solution with a common anode is required in a small outline package. The 300mW power rating supports moderate current clamping duties. Consider the positive temperature coefficient of +0.110%/°C for precision applications where voltage stability across temperature variations is critical. Verify that the 100Ω maximum impedance fits the noise and regulation requirements of the target circuit design.

Part Context

This part belongs to the AZ23C series, which offers a wide range of Zener voltages from 2.7V to 51V in a standardized SOT-23 footprint. The series provides both common anode and common cathode options to accommodate different circuit polarities. It serves as a drop-in replacement for legacy discrete dual Zener configurations, reducing board space and assembly complexity while maintaining consistent electrical performance across the voltage range.

Replacement Considerations

Direct substitutes include other AZ23C51 variants such as the Q-suffix automotive grade version or alternative manufacturers offering identical SOT-23 dual Zener arrays with matching 51V nominal voltage and 300mW power ratings. Verify pinout compatibility and thermal resistance values before substitution.