CDLL4931/TR

Single Zener Diodes Overview

The CDLL4931/TR is a temperature-compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 19.2 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to 175°C. It utilizes the DO-213AA (DO-213) surface-mount package. Key electrical characteristics include a maximum reverse leakage current of 15 µA at 12 V and a Zener impedance of 36 Ohms.

Single Zener Diodes Feature Summary

• Temperature compensated design for stable voltage regulation across varying thermal conditions
• High operating junction temperature capability up to 175°C
• Surface-mount construction in a compact DO-213AA package

Single Zener Diodes Applications

• Voltage reference circuits requiring thermal stability
• Overvoltage protection stages in electronic systems
• Precision regulator biasing networks

Single Zener Diodes Procurement Notes

Verify the specific suffix TR indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status as some listings indicate non-compliance. Ensure the DO-213AA footprint matches the PCB layout requirements. Check for active manufacturing status and lead times directly with authorized distributors or Microchip.

Single Zener Diodes Selection Notes

Select this component when a precise 19.2 V reference with tight temperature drift characteristics is required. The 500 mW power rating supports moderate current applications. Consider the ±5% tolerance for budgeting voltage accuracy. The high temperature range suits harsh environments where standard diodes may fail.

Single Zener Diodes Part Context

This part belongs to the CDLL49xx series of temperature-compensated Zener diodes from Microchip. These devices are designed for applications demanding higher precision than standard Zener diodes, particularly where voltage stability over temperature is critical. The series offers various voltage options in the same package form factor.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with equivalent temperature-compensated Zener diodes from other manufacturers based on voltage, power, and package specifications.