L4008L8

Triacs Overview

The L4008L8 is a logic-sensitive gate triac from Littelfuse Inc., designed for AC switching and phase control applications. It features a voltage-off state of 400V and an on-state current rating of 8A. The device supports a non-repetitive surge current of 65A and 85A, depending on specific conditions. It utilizes a TO-220 isolated tab package for through-hole mounting. The component belongs to the Low Power TRIAC series up to 1200V, offering sensitive gate triggering characteristics suitable for precise control in motor speed and temperature modulation systems.

Triacs Feature Summary

• Logic-sensitive gate design for efficient triggering
• Bidirectional solid-state switching capability
• Through-hole TO-220 isolated tab packaging

Triacs Applications

• Motor speed control
• Temperature modulation
• AC phase control circuits

Triacs Procurement Notes

Verify the exact datasheet revision and electrical parameters directly with Littelfuse or authorized distributors before integration. Confirm that the TO-220 isolated tab package aligns with your thermal management requirements. Ensure the 400V blocking voltage and 8A continuous current ratings meet the specific load demands of your application circuit without exceeding the specified surge limits.

Triacs Selection Notes

Select this component when a logic-sensitive gate triac is required for low-power AC control tasks. The 400V rating suits general-purpose AC line applications. Consider the TO-220 package for ease of heat sinking if higher power dissipation occurs. Verify compatibility with the driving circuit's gate trigger current specifications, as the device requires specific sensitivity levels for reliable operation.

Triacs Part Context

This part belongs to Littelfuse's Low Power TRIAC series, which covers devices up to 1200V. The L4008L8 specifically addresses the 8A bi-directional switch segment within this family. It is engineered for applications requiring reliable AC switching with minimal gate drive power, fitting into broader power control and sensing solutions offered by the manufacturer.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for compatible alternatives. Cross-reference key parameters such as voltage rating, current capacity, and package type when evaluating potential substitutes to ensure functional equivalence in existing designs.