AZ23C18-7-G

Overview

The AZ23C18-7-G is a dual Zener diode array manufactured by Diodes Incorporated, housed in an SOT-323 surface-mount package. It features a common cathode configuration with a nominal Zener voltage of 18 V and a power dissipation rating of 300 mW. The device exhibits a Zener impedance of 50 Ohms at a test current of 5 mA, with a maximum reverse leakage current of 100 nA. Operating temperatures range from -65°C to +150°C, and the unit weighs approximately 8 mg.

Feature Summary

• Dual Zener diodes integrated into a single compact surface-mount package for space-constrained designs.
• Common cathode configuration simplifies circuit layout and component placement.
• High thermal stability supports operation across extended industrial temperature ranges.

Applications

• Voltage reference circuits requiring stable dual potential levels.
• Transient voltage suppression in low-power signal lines.
• Clamping applications in portable electronic devices.

Procurement Notes

Verify end-of-life status before procurement as this specific suffix variant may be discontinued. Confirm RoHS compliance details through official documentation. Ensure the SOT-323 footprint matches the target PCB design. Validate that the 300 mW power rating meets thermal requirements. Check for updated replacement part numbers if availability is restricted.

Selection Notes

Select this component when a dual common cathode Zener array is required in an SOT-323 form factor. Compare against the AZ23C18-7-F series for AEC-Q101 automotive qualification if higher reliability standards are necessary. Ensure the 18 V breakdown voltage aligns with the circuit's clamping or reference needs. Verify that the 50 Ohm impedance is acceptable for the intended frequency response.

Part Context

This component belongs to the AZ23C series of dual Zener arrays from Diodes Incorporated. It shares functional similarities with the AZ23C18-7 but utilizes the smaller SOT-323 package instead of the SOT-23-3. The series offers various voltage options within a consistent 300 mW power dissipation envelope.

Replacement Considerations

Public confirmed substitute part numbers: AZ23C18-7-F (SOT-23-3 package, AEC-Q101 qualified). Note that package dimensions differ between SOT-323 and SOT-23-3 variants.