CDLL5917B/TR

Single Zener Diodes Overview

The CDLL5917B/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB (MELF) package. It features a nominal Zener voltage of 4.7 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1.5 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 3.57 V and a Zener impedance of 2 Ohms at a test current of 80 mA. The forward voltage is specified as 1.2 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation via Zener breakdown in the DO-213AB MELF package.
• Capable of handling high power dissipation up to 1.5 W for robust circuit protection.
• Engineered for reliable operation across extreme industrial temperature environments.

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific suffix /TR indicates reel packaging when ordering. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure the DO-213AB footprint matches the design layout. Validate thermal management requirements against the 1.5 W dissipation limit in the final assembly.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 4.7 V reference in a compact surface-mount form factor. Consider the low Zener impedance for improved regulation accuracy under varying load conditions. Evaluate the extended temperature range suitability for harsh environment deployments compared to standard commercial grade alternatives.

Single Zener Diodes Part Context

This part belongs to the CDLL59xx series of glass-passivated Zener diodes from Microchip Technology. These devices utilize the DO-213AB MELF package, offering hermetic sealing and high reliability. The series covers a wide range of voltage values, providing standardized solutions for various voltage regulation needs in industrial and automotive electronics.

Single Zener Diodes Replacement Considerations

Direct substitutes may include other manufacturers' Zener diodes in the DO-213AB package with matching 4.7 V voltage and 1.5 W power rating. Verify pinout compatibility and thermal characteristics before substitution. Cross-reference with Microchip's official replacement guide for qualified equivalents.