CDLL4731A/TR

Single Zener Diodes Overview

The CDLL4731A/TR is a single Zener diode manufactured by Microchip Technology, designed for surface mount applications in the DO-213AB-2 package. It provides a nominal Zener voltage of 4.3 V with a tolerance of 5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 9 Ohms, and a test current of 58 mA. The component features a forward voltage of 1.2 V at 200 mA and is supplied in reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single Zener junction configuration
• Engineered for high-temperature reliability with operation up to 175°C
• Utilizes a leadless DO-213AB-2 MELF package for compact surface mounting

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the specific suffix TR indicates reel packaging when sourcing. Confirm the DO-213AB-2 footprint compatibility with PCB design constraints. Ensure the 4.3V Zener voltage aligns with circuit requirements. Check RoHS status as indicated in official documentation. Validate the manufacturer part number against Microchip Technology records to avoid counterfeit components.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 4.3V regulation point in a small form factor. The 1W power rating allows for moderate current handling in surface mount layouts. Consider the 5% tolerance for precision applications. The wide operating temperature range suits harsh environments. Compare the 9 Ohm impedance against noise-sensitive circuit needs.

Single Zener Diodes Part Context

This device belongs to the CDLL47xxA series of 1-watt Zener diodes produced by Microchip Technology. These components are engineered for robust performance in industrial and commercial electronics. The series offers various voltage options within a standardized MELF package format, facilitating consistent assembly processes across different product lines.

Single Zener Diodes Replacement Considerations

Consult Microchip Technology datasheets for direct equivalents within the CDLL47xxA family. Verify pinout and thermal characteristics before substituting with other manufacturers' DO-213AB devices.