L4X5

Triacs Overview

The Littelfuse L4X5 is a standard triac designed for AC switching and phase control applications. It features a 0.8 A RMS on-state current rating and supports voltage capabilities of 400 V to 600 V. The device operates in Quadrants I, II, and III with a maximum gate trigger current (IGT) of 25 mA. It utilizes a Compak surface-mount package and includes glass-passivated junctions for parameter stability.

Triacs Feature Summary

• Standard triac configuration optimized for AC line triggering
• Glass-passivated junctions ensure long-term reliability
• RoHS compliant construction

Triacs Applications

• AC solid-state switches
• Home appliance controls
• Lower current heating controls

Triacs Procurement Notes

Verify the specific voltage rating suffix (e.g., 4 for 400V or 6 for 600V) required for your circuit design. Confirm that the Compak surface-mount package aligns with your PCB layout constraints. Ensure the standard quadrant operation meets your load requirements.

Triacs Selection Notes

Select this component for applications requiring low-current AC switching where surface-mount assembly is preferred. Verify that the peak surge current capability of 10 A at 60 Hz is sufficient for your startup conditions. Check that the gate drive circuit can supply the necessary 25 mA trigger current.

Triacs Part Context

This part belongs to the LxXy series of 0.8 Amp Sensitive & Standard Triacs from Littelfuse. The 'L' prefix indicates a standard triac type, while the '4' denotes the 400V voltage rating. The 'X5' identifies the 0.8A current rating and the specific gate sensitivity level within the product family.

Triacs Replacement Considerations

Compatible substitutes include other 0.8A standard triacs in the Compak package. Verify matching electrical parameters such as holding current, dv/dt ratings, and thermal resistance before substitution.