L4006L5

Triacs Overview

The L4006L5 is a logic-sensitive gate TRIAC manufactured by Littelfuse Inc., designed for AC power control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (IT(RMS)) of 6 A. The device utilizes a TO-220 isolated tab package for through-hole mounting, providing electrical isolation between the terminal and the heatsink. Key electrical characteristics include a holding current of 10 mA and a critical rate of rise of commutation voltage (dv/dt) of 1 V/µs. Non-repetitive on-state currents are specified at 50 A and 60 A under different pulse conditions.

Triacs Feature Summary

• Logic-sensitive gate architecture enables direct interface with low-power logic circuits without requiring additional triggering components.
• Integrated isolated tab construction in the TO-220 package ensures safe thermal management while maintaining electrical separation from mounting hardware.
• High surge current capability supports robust operation during transient load conditions and inductive switching events.

Triacs Applications

• Solid-state relay modules
• Lighting dimmer circuits
• Motor speed control systems

Triacs Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS3 compliance status if environmental regulations apply to your assembly process. Ensure the TO-220 isolated tab variant matches your thermal design requirements, as non-isolated versions exist within the same series. Cross-reference part numbers carefully to avoid confusion with similar ratings.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 6 A continuous current rating align with circuit demands. The logic-sensitive gate feature is essential for designs driven directly by microcontrollers or standard logic ICs. Consider the TO-220 package size for available PCB space and heatsinking capabilities. Evaluate the 1 V/µs dv/dt rating against potential voltage transients in the load environment.

Triacs Part Context

This device belongs to the Lxx06xx series of TRIACs from Littelfuse, characterized by standardized 6 A current ratings and varying voltage options. The L4006L5 specifically addresses the 400 V segment, offering a balance between voltage withstand capability and current handling for general-purpose AC switching tasks.

Triacs Replacement Considerations

Compatible substitutes must match the 400 V VDRM, 6 A IT(RMS), and logic-sensitive gate type. Verify package compatibility, specifically the TO-220 isolated tab configuration, to ensure mechanical and electrical interchangeability without redesigning the PCB layout.

Triacs FAQ

What is the minimum gate trigger current required for this TRIAC?

The L4006L5 is a logic-sensitive gate device, typically requiring a gate current in the range of 5 mA to 25 mA for reliable triggering, depending on junction temperature and specific operating conditions defined in the datasheet.

Does the TO-220 package provide electrical isolation?

Yes, the L4006L5 uses a TO-220 isolated tab package, which electrically isolates the main terminal from the metal tab, allowing the tab to be mounted to a heatsink without creating a short circuit.