AZ23C51-7

Overview

The AZ23C51-7 is a dual surface mount Zener diode from Diodes Incorporated, housed in an SOT23 package. It features a common anode configuration with two independent Zener elements sharing a single terminal. The nominal Zener voltage is 51 V, with a specified range of 48 V to 54 V at a test current of 5.0 mA. Maximum power dissipation is rated at 300 mW, and the device operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum Zener impedance (ZZT) of 100 Ω and a typical temperature coefficient of +0.11%/°C.

Feature Summary

• Dual Zener diodes integrated into a single compact SOT23 package for space-efficient designs.
• Common anode configuration allows shared connection points for simplified circuit routing.
• High reliability qualification compliant with JEDEC standards for robust performance.
• Lead-free and halogen-free construction ensuring compliance with environmental directives.

Applications

• Voltage reference circuits requiring stable dual supply rails.
• Over-voltage protection stages in signal conditioning paths.
• Clamping applications for transient suppression in sensitive electronics.

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer's part number against official datasheets. Confirm that the received devices match the specified SOT23 package dimensions and marking codes. Ensure storage conditions adhere to moisture sensitivity level requirements to maintain solderability and electrical integrity prior to assembly.

Selection Notes

Select this component when a dual Zener solution with a common anode topology is required. The 51 V nominal voltage suits applications needing precise regulation near this threshold. Consider the 300 mW power rating and thermal resistance when designing heat dissipation strategies for high-density PCB layouts.

Part Context

This part belongs to the AZ23C series of dual surface mount Zener diodes manufactured by Diodes Incorporated. The series offers various voltage options within the same SOT23 footprint, facilitating design flexibility. The AZ23C51-7 specifically provides the higher voltage end of the standard commercial grade lineup.

Replacement Considerations

For automotive applications requiring specific change control or AEC-Q101 qualification, refer to the Q-suffix variant AZ23C51Q-7-F. For a common cathode configuration instead of common anode, consider the DZ23C51-7-F from the same manufacturer family.