CDLL4622D/TR

Single Zener Diodes Overview

The CDLL4622D/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 3.9 V with a tight tolerance of ±2%. The device operates in the DO-213AA-2 package and dissipates up to 500 mW of power. Key electrical parameters include a maximum reverse leakage current of 5 µA and a Zener impedance of 1.55 kΩ at a test current of 250 µA. It supports an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a narrow 2% tolerance band for stable reference applications.
• Engineered for high-temperature reliability with an extended operational range up to 175°C.
• Utilizes a compact surface-mount package suitable for automated assembly processes.

Single Zener Diodes Applications

• Precision voltage reference circuits
• Over-voltage protection stages
• Clamping applications in signal conditioning

Single Zener Diodes Procurement Notes

Verify the specific suffix D/TR against official Microchip documentation to confirm tape-and-reel packaging and exact tolerance grades. Ensure compatibility with DO-213AA-2 footprint requirements during PCB layout. Cross-reference datasheet revisions to confirm thermal characteristics and testing conditions match system design constraints before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a low-voltage reference requires tight initial accuracy compared to standard 5% variants. Consider the 500 mW power dissipation limit relative to expected surge currents. Evaluate the high-temperature capability if the environment exceeds standard industrial ranges. Compare leakage specifications against sensitive input stages to ensure minimal noise injection.

Single Zener Diodes Part Context

This part belongs to the CDLL46xx series of axial-equivalent surface-mount Zener diodes. It serves as a drop-in replacement for through-hole components in space-constrained designs. The series offers various voltage options within a standardized package family, allowing designers to maintain consistent board layouts across different voltage reference requirements.

Single Zener Diodes Replacement Considerations

Check for CDLL4622D (bulk) or CDLL4622A (5% tolerance) if reel packaging or looser tolerances are acceptable. Verify pinout compatibility with DO-213AA-2 footprints when substituting with other manufacturers' equivalents.