AZ23C43 RFG

Overview

The AZ23C43 RFG is a dual Zener diode array manufactured by Taiwan Semiconductor Corporation, housed in an SOT-23 surface-mount package. It features a common anode configuration with a nominal Zener voltage of 43 V and a tolerance of ±5%. The device supports a maximum power dissipation of 300 mW and operates within a junction temperature range of -55°C to 150°C. Key electrical specifications include a reverse leakage current of 100 nA at 32 V and a maximum impedance of 100 Ohms. The component is RoHS compliant and classified under ECCN EAR99.

Feature Summary

• Dual Zener diode structure integrated into a single compact SOT-23 package for space-constrained designs.
• Common anode configuration simplifies circuit topology for voltage reference or protection applications.
• High thermal stability with a wide operating junction temperature range extending to 150°C.

Applications

• Voltage regulation in low-power portable electronics
• Clamping circuits for ESD protection in signal lines
• Reference voltage generation in analog sensor interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure compatibility with required packaging formats such as tape and reel or cut tape. Confirm that the RoHS status meets environmental compliance requirements for the target assembly process. Cross-reference the supplier part number with the original manufacturer identifier to avoid counterfeit components during sourcing.

Selection Notes

Select this component when a dual Zener solution with a 43 V breakdown voltage is required in a minimal footprint. Ensure the circuit design accounts for the 300 mW power rating and the 100 Ohm impedance characteristic at the operating current. Verify that the ±5% voltage tolerance aligns with the precision needs of the application before finalizing the bill of materials.

Part Context

This part belongs to the AZ23C series of dual Zener diode arrays from Taiwan Semiconductor. The series offers various voltage options in the same SOT-23 package, allowing designers to standardize on a single footprint while adjusting voltage levels through different model numbers within the family.

Replacement Considerations

Check for direct substitutes from other manufacturers offering identical SOT-23 dual Zener configurations with 43 V nominal voltage and similar power ratings. Verify pinout compatibility and thermal characteristics before substitution to ensure seamless integration without redesigning the PCB layout.