CCL4500 TR PBFREE

Current Regulation - Diodes, Transistors Overview

The CCL4500 TR PBFREE is a silicon current regulator diode manufactured by Central Semiconductor Corp. It provides a constant current of 4.5mA with a limiting voltage of 3.7V. The component is housed in a hermetically sealed DO-35 glass package, featuring two pins and isolated case connection. Designed for high reliability, it operates within a temperature range of -65°C to 200°C. The device has a maximum dynamic impedance of 200,000 Ω and is classified under JEDEC-95 code DO-35.

Current Regulation - Diodes, Transistors Feature Summary

• Maintains stable current regulation via silicon junction technology
• Hermetically sealed glass construction ensures environmental protection
• High-reliability design suitable for demanding operational conditions

Current Regulation - Diodes, Transistors Applications

• Constant current sources for LED biasing
• Current limiting in electronic circuits
• Biasing elements for transistor stages

Current Regulation - Diodes, Transistors Procurement Notes

Verify the specific suffix 'TR PBFREE' against official datasheets to confirm tape-and-reel packaging and lead-free compliance. Ensure the DO-35 package dimensions match the target PCB footprint. Confirm RoHS status directly with the manufacturer as regulatory classifications can vary by production batch.

Current Regulation - Diodes, Transistors Selection Notes

Select this component when a fixed 4.5mA current is required without complex circuitry. The DO-35 package suits through-hole mounting. Verify that the 3.7V limiting voltage aligns with the available voltage headroom in the application circuit. Consider the 200°C maximum operating temperature for high-heat environments.

Current Regulation - Diodes, Transistors Part Context

This part belongs to the CCL series of current regulator diodes from Central Semiconductor. Variants like CCL4500 BK or LEADFREE share identical electrical characteristics but differ in packaging certifications or lead content specifications. The TR designation indicates reel packaging for automated assembly.

Current Regulation - Diodes, Transistors Replacement Considerations

Direct substitutes include other manufacturers' DO-35 current regulator diodes with 4.5mA nominal current. Verify pinout compatibility and thermal resistance. Generic equivalents may require validation of dynamic impedance and leakage current parameters.