CL40M45-AQ

Current Regulation - Diodes, Transistors Overview

The Diotec Semiconductor CL40M45-AQ is a surface-mount current limiting diode designed for constant current regulation. It operates with a nominal regulator current of 40 mA and supports a peak operating voltage up to 90 V. The device dissipates a maximum power of 1 W at 50°C ambient temperature when mounted on a PCB with 25 mm² copper pads per terminal. It functions within an operating junction temperature range of -50°C to +150°C and features a reverse voltage of 0.5 V. The component is housed in an SMB (DO-214AA) package, weighs approximately 0.1 g, and complies with AEC-Q101 automotive qualification standards.

Current Regulation - Diodes, Transistors Feature Summary

• AEC-Q101 qualified for automotive applications
• Supports parallel operation for higher current handling
• Compliant with RoHS, REACH, and Conflict Minerals regulations

Current Regulation - Diodes, Transistors Applications

• Low power LED drivers
• Battery chargers
• Constant current regulators for simple sensor circuits
• Power supply for microcontrollers using shunt regulators

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific ordering suffix to confirm the exact qualification level required for your design. The -AQ suffix indicates AEC-Q101 qualified status, while other suffixes may denote different compliance grades. Ensure that the procurement documentation matches the intended commercial or automotive application requirements before finalizing orders.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a compact SMD solution is needed for low-power constant current regulation. Consider the 90 V peak operating voltage limit and the 1 W power dissipation capability based on your PCB copper pad size. Parallel configurations can be utilized if higher current capacity than the nominal 40 mA is required by the circuit design.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the CL15M45 through CL40M45 series of SMD current limiting diodes manufactured by Diotec Semiconductor. The series offers varying nominal currents from 15 mA to 40 mA within the same SMB package footprint, allowing for standardized board layouts across different current rating requirements.

Current Regulation - Diodes, Transistors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.