CDLL4120D

Single Zener Diodes Overview

The CDLL4120D is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of ±5%. The device operates within a power dissipation rating of 500 mW and utilizes the DO-213AA (SMB) surface-mount package. Key electrical characteristics include a maximum reverse leakage current of 10 nA at 22.8 V and a Zener impedance of 200 ohms. It supports an extended operating temperature range from -65°C to +175°C, ensuring reliability in demanding environments.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with a nominal 30 V Zener breakdown voltage.
• Capable of handling up to 500 mW of power dissipation in a compact surface-mount form factor.
• Engineered for high-temperature stability with an operational range extending to +175°C.
• Features low reverse leakage current to minimize standby power consumption.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels.
• Over-voltage protection stages in electronic systems.
• Clamping applications in signal processing paths.
• Biasing networks for semiconductor devices.

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' indicates bulk packaging when sourcing components. Confirm the DO-213AA footprint compatibility with PCB design constraints. Ensure the manufacturer is identified as Microchip Technology to avoid counterfeit parts. Check datasheet revisions for any updates to thermal or electrical specifications prior to final integration.

Single Zener Diodes Selection Notes

Select this component when a 30 V regulation point is required in space-constrained designs. The DO-213AA package offers a balance between power handling and board area efficiency. Consider the ±5% tolerance for applications allowing moderate voltage variation. Evaluate the 500 mW rating against expected thermal conditions to ensure safe operation without external heat sinking.

Single Zener Diodes Part Context

This part belongs to the CDLL series of glass-passivated Zener diodes from Microchip Technology. These devices are characterized by their robust construction and suitability for general-purpose voltage regulation tasks. The series is widely used in industrial and consumer electronics where reliable performance across wide temperature ranges is essential.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering 30 V Zener diodes in the DO-213AA package. Verify that substitute parts meet or exceed the 500 mW power rating and 175°C maximum operating temperature. Ensure electrical parameters such as Zener impedance and leakage current remain within acceptable limits for the specific application circuit.