CDLL4922

Single Zener Diodes Overview

The CDLL4922 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 in the DO-213AA-2 (SOD-80) surface-mount package and supports a maximum DC power dissipation of 500 mW at +50°C, with derating of 4 mW/°C above this threshold. It functions within an operating temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 15 µA at 25°C and 12 Vdc, and a test current of 2 mA.

Single Zener Diodes Feature Summary

• Temperature compensation design for stable voltage regulation across wide thermal ranges
• Leadless surface-mount construction for compact PCB integration
• Double plug construction with metallurgical bonding for enhanced reliability

Single Zener Diodes Applications

• Precision voltage reference circuits requiring low noise
• Temperature-compensated regulator designs
• High-reliability industrial instrumentation

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., /TR) against the official datasheet to confirm packaging format, as standard listings may vary between tape-and-reel and bulk configurations. Ensure the component meets RoHS compliance requirements if mandated by the target application standards. Cross-reference the manufacturer part number directly with Microchip Technology documentation to validate authenticity and current production status before procurement.

Single Zener Diodes Selection Notes

Select this component when a stable 19.2 V reference is required under extreme thermal conditions ranging from -65°C to +175°C. The SOD-80 package is suitable for space-constrained surface-mount applications. Consider the 500 mW power dissipation limit and derating curve for thermal management planning. Verify that the 15 µA leakage current specification aligns with the precision requirements of the circuit design.

Single Zener Diodes Part Context

The CDLL4922 belongs to Microchip's family of temperature-compensated Zener reference diodes, which includes variants such as the CDLL4916 and CDLL4900A/TR. These devices utilize double plug construction and are designed for high-stability applications. They share common package styles like the leadless DO-213AA-2 and are intended for environments demanding superior thermal stability compared to standard Zener diodes.

Single Zener Diodes Replacement Considerations

Consult official substitution guides for equivalent temperature-compensated Zener references. Verify that any substitute matches the 19.2 V nominal voltage, ±5% tolerance, and SOD-80 package dimensions. Ensure thermal performance and leakage current specifications meet or exceed the original requirements.