CDLL4494

Single Zener Diodes Overview

The CDLL4494 is a single Zener diode manufactured by Microchip Technology, designed for surface mount applications in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 160 V with a tolerance of ±5%. The device supports a power dissipation of 1.5 W and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 10 µA and a Zener impedance of 200 ohms at a test current of 40 mA.

Single Zener Diodes Feature Summary

• High voltage regulation capability up to 160 V
• Extended operating temperature range suitable for harsh environments
• Robust 1.5 W power dissipation rating
• Compact MELF surface mount packaging

Single Zener Diodes Applications

• Voltage reference circuits requiring high stability
• Overvoltage protection in industrial systems
• Clamping applications in high-voltage signal paths

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., /TR for reel packaging) against project requirements. Confirm RoHS compliance status as indicated in official datasheets. Ensure the DO-213AB footprint matches the PCB design. Validate thermal management capabilities for the intended 1.5 W dissipation level under actual operating conditions.

Single Zener Diodes Selection Notes

Select this component when a high-voltage Zener reference is needed in a compact form factor. The 160 V rating suits applications exceeding standard low-voltage regulator limits. Consider the 1.5 W power handling for robust transient suppression. The wide temperature range ensures reliability in extreme environmental conditions compared to standard commercial grade parts.

Single Zener Diodes Part Context

This part belongs to Microchip's CDLL series of glass-passivated Zener diodes. These components are engineered for high-reliability applications where small size and stable voltage regulation are critical. The MELF package offers superior mechanical strength and hermetic sealing compared to traditional plastic packages.

Single Zener Diodes Replacement Considerations

Check for direct equivalents from other manufacturers offering identical 160 V, 1.5 W specifications in the DO-213AB package. Verify pinout compatibility and thermal resistance values before substitution.