CDLL5239D/TR

Single Zener Diodes Overview

The CDLL5239D/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 9.1 V with a tolerance of ±1%. The device is housed in a DO-213AA (SOD-80) package and supports a maximum operating temperature of +175°C. Key electrical characteristics include a maximum reverse leakage current of 3 µA at 7 V and a Zener impedance of 8 Ohms. It is supplied in reel packaging.

Single Zener Diodes Feature Summary

• High-temperature operation capability up to 175°C
• Precision voltage regulation with ±1% tolerance
• Low reverse leakage current for efficient standby performance

Single Zener Diodes Applications

• Voltage reference circuits requiring high precision
• Overvoltage protection in harsh environments
• Clamping applications in industrial electronics

Single Zener Diodes Procurement Notes

Verify the specific tolerance grade, as standard variants often carry ±5% while this part specifies ±1%. Confirm the package type matches DO-213AA/SOD-80 dimensions. Check RoHS compliance status as it may vary by production batch. Ensure the supplier provides valid traceability documentation for the MELF-style package.

Single Zener Diodes Selection Notes

Select this component when a precise 9.1 V reference is needed in a compact surface-mount form factor. The ±1% tolerance makes it suitable for accuracy-critical designs compared to standard ±5% versions. Consider the 175°C rating for high-thermal-stress environments where standard silicon diodes might fail.

Single Zener Diodes Part Context

This part belongs to the CDLL5239 series of single Zener diodes from Microchip Technology. It shares the same nominal voltage and general structure with other variants like CDLL5239B but differs in tolerance specifications and packaging options. The series is commonly used in power management and signal conditioning applications.

Single Zener Diodes Replacement Considerations

CDLL5239B is a direct substitute with identical voltage but typically ±5% tolerance. Verify if the tighter ±1% tolerance of the D variant is required for your design margins.