CDLL5540D

Single Zener Diodes Overview

The CDLL5540D is a Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It utilizes a DO-213AB (MELF) surface-mount package and operates within an extended temperature range of -65°C to +175°C. The device provides a nominal Zener voltage of 20V with a maximum power dissipation of 500mW. Key electrical characteristics include a reverse leakage current of 10nA at 18V and a Zener impedance of 100 ohms measured at a test current of 5mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction ensures high reliability and environmental stability
• Extended operating temperature range supports demanding industrial conditions
• Low reverse leakage current contributes to efficient circuit performance

Single Zener Diodes Applications

• Voltage reference circuits requiring stable regulation
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix 'D' against official Microchip documentation to confirm package type and testing standards. Ensure compatibility with DO-213AB footprint requirements during PCB layout. Confirm RoHS status and compliance details directly from the manufacturer's datasheet prior to procurement.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed MELF package is required for high-reliability environments. Consider the 500mW power rating and 20V Zener voltage for appropriate thermal management. Verify that the 100-ohm impedance meets the noise and regulation requirements of the target application.

Single Zener Diodes Part Context

This part belongs to the CDLL series of silicon Zener diodes produced by Microchip Technology. These devices are characterized by their metallurgically bonded glass encapsulation, which distinguishes them from plastic-packaged alternatives. The series is engineered for applications where long-term stability and resistance to harsh conditions are critical design parameters.

Single Zener Diodes Replacement Considerations

Consult official Microchip substitution guides for verified equivalents. Generic replacements may not match the hermetic sealing or extended temperature specifications.