CDLL5537A/TR

Single Zener Diodes Overview

The CDLL5537A/TR is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 17 V with a tight tolerance of 2%. The device operates within a power dissipation limit of 500 mW and maintains a maximum reverse leakage current of 10 nA at the specified test current of 1 mA. Its Zener impedance is rated at 100 Ohms. The component is housed in a DO-213AA-2 (SOD-80) package and supports an extended operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a 2% tolerance on the 17 V Zener voltage.
• Engineered for high-temperature reliability with an operational range extending up to 175°C.
• Features low reverse leakage current to minimize power loss in standby states.
• Utilizes a compact SMD package suitable for automated surface-mount assembly.

Single Zener Diodes Applications

• Precision voltage reference circuits requiring stable DC levels.
• Over-voltage protection stages in sensitive electronic systems.
• Clamping applications in signal processing paths.
• Voltage regulator designs in industrial control equipment.

Single Zener Diodes Procurement Notes

Verify the specific suffix 'A' indicates the 2% tolerance variant, distinct from standard or other tolerance grades. Confirm the 'TR' suffix denotes tape-and-reel packaging for automated handling. Ensure the DO-213AA-2 footprint matches the target PCB design. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance status or pinout configurations before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a 17 V reference with high precision is required in a small form factor. The 500 mW power rating suits moderate current applications. Consider the 100 Ohm impedance for dynamic load variations. The wide temperature range makes it suitable for harsh environments where standard commercial-grade parts may fail. Ensure the circuit design accounts for the 1 mA test current condition for accurate voltage prediction.

Single Zener Diodes Part Context

This part belongs to the CDLL5537 series of Zener diodes from Microchip Technology. It shares the same physical package and general electrical characteristics as variants with different tolerances, such as the CDLL5537C/TR which offers a 2% tolerance but may differ in specific testing conditions or availability. The series is designed for general-purpose voltage regulation tasks in compact electronic assemblies.

Single Zener Diodes Replacement Considerations

Direct substitutes include other Microchip Zener diodes in the DO-213AA-2 package with identical 17 V and 2% tolerance ratings, such as the CDLL5537C/TR if electrical parameters align. Verify that alternative sources maintain the same 500 mW power dissipation and 175°C maximum operating temperature limits to ensure system reliability.