CDLL4099C

Single Zener Diodes Overview

The CDLL4099C is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AA (MELF) package. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device supports a maximum DC power dissipation of 500 mW and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a maximum reverse leakage current of 10 nA at 8.2 V and a Zener impedance of 1.2 kΩ measured at a test current of 250 µA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF construction for environmental stability
• Metallurgically bonded design ensuring reliable performance under thermal stress
• Low current operation capability optimized for sensitive circuit protection

Single Zener Diodes Applications

• Voltage regulation in high-reliability electronic systems
• Overvoltage protection circuits requiring hermetic sealing
• Reference voltage generation in precision analog interfaces

Single Zener Diodes Procurement Notes

Verify compliance with specific military or aerospace qualification standards such as MIL-PRF-19500/435 if required for the application. Confirm that the leaded variant meets project material restrictions. Ensure the ordering suffix matches the exact voltage tolerance and packaging configuration needed for production integration.

Single Zener Diodes Selection Notes

Select this component when hermetic sealing and wide operating temperature ranges are mandatory. The DO-213AA package offers a compact footprint suitable for space-constrained designs. Consider the 1.2 kΩ impedance value for noise-sensitive applications where low current drive is sufficient.

Single Zener Diodes Part Context

This part belongs to the CDLL4099 series, which includes various Zener voltage options within the same hermetic MELF package family. These devices are engineered for rugged environments where standard plastic packages may fail. The series provides consistent electrical characteristics across different voltage ratings while maintaining identical physical dimensions.

Single Zener Diodes Replacement Considerations

Direct substitutes include other hermetic Zener diodes in the DO-213AA package from qualified manufacturers. Verify that alternative parts meet the same 500 mW power dissipation and -65°C to +175°C temperature specifications. Cross-reference with JANTX or JANS variants if higher reliability grades are necessary.