CDLL4916A

Single Zener Diodes Overview

The CDLL4916A is a temperature compensated Zener reference diode manufactured by Microchip Technology. It features a nominal Zener voltage of 19.2 V with a tolerance of +5%. The device operates within an extended temperature range from -65°C to +175°C and supports a DC power dissipation of 500 mW at +50°C, with derating of 4 mW/°C above this threshold. Key electrical characteristics include a maximum reverse leakage current of 15 µA at 25°C and 12 Vdc reverse voltage. It utilizes a leadless surface mount package designed for robust performance in demanding environments.

Single Zener Diodes Feature Summary

• Temperature compensated design ensures stable voltage regulation across wide thermal variations
• Low noise operation suitable for precision analog applications
• Double plug construction provides enhanced reliability and stability
• Metallurgically bonded die attachment improves thermal conductivity and mechanical strength

Single Zener Diodes Applications

• Precision voltage reference circuits requiring low temperature drift
• High-temperature industrial control systems
• Military and aerospace electronic equipment
• Sensitive analog signal conditioning stages

Single Zener Diodes Procurement Notes

Verify the specific suffix 'A' indicates the +5% tolerance variant distinct from standard versions. Confirm package type matches DO-213AA-2 or equivalent leadless SMD footprint during layout. Ensure thermal management accounts for 500 mW dissipation limits at elevated ambient temperatures. Cross-reference datasheet revision dates to confirm parameter consistency before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when high stability over extreme temperature ranges is critical. The temperature compensation feature makes it superior to standard Zener diodes for reference applications. Consider the 19.2 V nominal output level against circuit requirements. Evaluate the leadless package for space-constrained PCB designs requiring high reliability under thermal stress conditions.

Single Zener Diodes Part Context

This part belongs to Microchip's CDLL49xx series of temperature compensated Zener reference diodes. These devices are engineered for applications where standard Zener diodes exhibit unacceptable voltage drift due to temperature changes. The series offers various voltage options while maintaining consistent package dimensions and electrical characteristics for interchangeable design implementations.

Single Zener Diodes Replacement Considerations

Check for direct equivalents in the CDLL49xx series with matching voltage ratings. Verify that any substitute maintains the same temperature coefficient and package outline. Ensure replacement parts meet the same -65°C to +175°C operating range specifications.