CDLL4684E3

Single Zener Diodes Overview

The CDLL4684E3 is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 3.3 V with a tolerance of ±5%. The device operates in the DO-213AA (SMA) surface-mount package and supports a maximum power dissipation of 500 mW. It maintains functionality across an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 7.5 µA and a forward voltage of 1.1 V at 200 mA. The component complies with RoHS standards.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a 3.3 V Zener breakdown characteristic.
• Supports high-temperature operation up to 175°C junction temperature.
• Utilizes a compact surface-mount DO-213AA package for automated assembly.

Single Zener Diodes Applications

• Voltage reference circuits requiring precise low-voltage regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix E3 confirms lead-free compliance and RoHS status against the manufacturer's latest documentation. Confirm the package type matches the required PCB footprint. Ensure the operating environment stays within the specified -65°C to +175°C range. Check for any recent production change notices affecting assembly sites or materials. Validate that the 500 mW power rating is sufficient for the intended thermal conditions.

Single Zener Diodes Selection Notes

Select this component when a 3.3 V regulation point is required in a surface-mount design. The DO-213AA package offers a balance between power handling and board space efficiency. Consider the ±5% voltage tolerance for precision requirements. The wide temperature range makes it suitable for industrial or automotive environments where standard commercial parts may fail. Compare leakage current specifications if low-power standby modes are critical.

Single Zener Diodes Part Context

This part belongs to Microchip's CDLL series of small-signal Zener diodes. The series provides various voltage options in standardized surface-mount packages. The E3 suffix typically denotes environmental compliance, specifically lead-free manufacturing. These diodes are commonly used in general-purpose electronics for biasing and protection tasks.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 3.3 V Zener voltage, 500 mW power rating, and DO-213AA package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers' SMA-DO-213AA equivalents ensuring identical electrical parameters and temperature ratings.