CDLL4739

Single Zener Diodes Overview

The CDLL4739 is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a power dissipation rating of 1 W. The component utilizes a DO-204AL (DO-41) axial through-hole package and offers a voltage tolerance of ±5%. It operates within a temperature range of -65°C to +150°C, maintaining a maximum reverse leakage current of 10 µA at 7 V and a forward voltage of 1.2 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation with a nominal Zener voltage of 9.1 V
• Supports high power dissipation up to 1 W for robust performance
• Features low reverse leakage current of 10 µA at 7 V for efficiency
• Constructed in a durable DO-204AL axial through-hole package

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 9.1 V levels
• Overvoltage protection in electronic systems
• General-purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as availability varies between bulk and tape-and-reel configurations. Confirm compliance requirements such as RoHS status, as some variants may not meet current environmental standards. Ensure the selected package matches the intended PCB layout, distinguishing between axial leaded and surface-mount options if applicable to the broader family.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 9.1 V Zener voltage with 1 W power handling capability. The DO-204AL package is suitable for through-hole mounting. Consider the ±5% tolerance and operating temperature range of -65°C to +150°C to ensure compatibility with the system's thermal and electrical constraints.

Single Zener Diodes Part Context

This part belongs to the Microchip Technology Zener Diode series, specifically the CDLL/1N47xx family. These components are widely used for voltage regulation and protection. The CDLL4739 is distinct from surface-mount variants like the CDLL4739D/TR, which use different packaging such as DO-213AB. Understanding the package difference is critical for proper integration into circuit designs.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 9.1 V 1 W Zener diodes in the DO-41 package. Verify electrical parameters such as Zener impedance and leakage current to ensure functional equivalence. Cross-reference with standard 1N4739 equivalents from other suppliers if Microchip stock is unavailable.