AZ23C18-7

Overview

The AZ23C18-7-F is a dual Zener diode array manufactured by Diodes Incorporated, housed in an SOT-23 surface-mount package. It features a common anode configuration with a maximum power dissipation of 300 mW. The nominal Zener voltage is 18 V, operating within a range of 16.8 V to 19.1 V at a test current of 5.0 mA. Maximum Zener impedance is specified as 50 Ω at IZT and 170 Ω at IZK. The device exhibits a typical temperature coefficient of +0.09 %/°C and supports an operating and storage temperature range from -65 °C to +150 °C.

Feature Summary

• Dual Zener diodes integrated into a single common anode configuration for space-efficient circuit design.
• High reliability qualification meeting JEDEC standards for robust performance in demanding environments.
• Environmentally compliant construction utilizing lead-free plating and halogen-free molding compounds.

Applications

• Voltage reference circuits requiring stable dual potential levels.
• Transient voltage suppression in low-power signal lines.
• Automotive electronic systems compatible with commercial grade components.

Procurement Notes

Verify the complete part number includes the suffix -7-F to confirm commercial grade status and tape-and-reel packaging quantity. Confirm that the specific application does not require AEC-Q101 automotive qualification, which necessitates the Q-suffix variant. Ensure ordering quantities align with standard reel sizes to avoid cut-tape handling requirements.

Selection Notes

Select this component when a dual Zener array with a common anode topology is required. The 18 V nominal breakdown voltage suits applications needing precise clamping or reference levels near this threshold. Verify that the 300 mW power rating accommodates the expected thermal load without exceeding junction temperature limits under worst-case ambient conditions.

Part Context

This device belongs to the AZ23C series of dual surface mount Zener diodes produced by Diodes Incorporated. The series spans various voltage ratings from 2.7 V to 51 V, all sharing identical physical dimensions and electrical characteristics structure. The AZ23C18-7-F represents the specific 18 V variant within this standardized family of high-reliability semiconductor devices.

Replacement Considerations

The DZ23C18-7-F serves as a direct functional replacement if a common cathode configuration is acceptable instead of the common anode layout. Other manufacturers offering SOT-23 dual Zener arrays may provide equivalent specifications but require verification of pinout compatibility and impedance parameters.

FAQ

What is the difference between the AZ23C18-7-F and AZ23C18Q-7-F?

The AZ23C18-7-F is qualified to commercial JEDEC standards, whereas the AZ23C18Q-7-F is qualified to AEC-Q101 automotive standards and manufactured in IATF 16949 certified facilities.

How is the polarity defined for the AZ23C18-7-F?

The device utilizes a common anode configuration, meaning the anodes of both internal Zener diodes are connected to a single terminal, while the cathodes serve as independent outputs.

What is the maximum reverse leakage current for this component?

The datasheet specifies a maximum reverse leakage current (IR) of 0.1 µA at a reverse voltage of 14.0 V for the AZ23C18 variant.