CDLL4751A/TR

Single Zener Diodes Overview

The CDLL4751A/TR is a single silicon Zener diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB-2 (PD) package. It provides a nominal Zener voltage of 30 V with a tight tolerance of 5%. The device supports a power dissipation of 1 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 100 nA, a Zener impedance of 40 Ohms, and a test current of 8.5 mA. It is supplied in reel packaging.

Single Zener Diodes Feature Summary

• High-temperature operation capability up to +175°C for demanding environments
• Precision voltage regulation with 5% tolerance at 30 V
• Low leakage current specification for sensitive circuit protection
• Robust 1 W power handling in compact SMD form factor

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Over-voltage protection in high-reliability systems
• Clamping applications in industrial control equipment
• Power supply regulation modules

Single Zener Diodes Procurement Notes

Verify the specific manufacturer part number against official Microchip documentation to ensure authenticity. Confirm that the DO-213AB-2 package matches your PCB footprint requirements. Check for any specific handling or storage guidelines related to the glass MELF construction. Ensure compatibility with your assembly process temperatures given the wide operating range.

Single Zener Diodes Selection Notes

Select this component when a precise 30 V reference is needed in a surface-mount design. The 5% tolerance suits applications where tighter regulation is not critical but cost-effectiveness is desired. Consider the 1 W power rating for thermal management needs. The extended temperature range makes it suitable for automotive or industrial sectors where standard commercial parts may fail.

Single Zener Diodes Part Context

This part belongs to the CDLL47xxA series of Zener diodes from Microchip Technology. These devices are characterized by their glass passivated junctions and hermetic sealing in the MELF-style DO-213AB package. The series offers various voltage options, with the 4751 variant specifically targeting the 30 V market segment for general-purpose regulation tasks.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering DO-213AB packaged Zener diodes rated at 30 V, 1 W, and 5% tolerance. Verify pinout compatibility and thermal resistance values before substitution. Ensure the alternative device meets the same -65°C to +175°C operating temperature range.