L401E373

Triacs Overview

The L401E373 is a logic-sensitive gate TRIAC manufactured by Littelfuse Inc. It features a maximum off-state voltage of 400 V and an on-state RMS current rating of 1 A. The component utilizes a TO-92 through-hole package for radial lead mounting. Its gate trigger current (Igt) is specified at a maximum of 3 mA, classifying it as a sensitive gate device suitable for low-power control applications.

Triacs Feature Summary

• Logic-sensitive gate architecture enabling operation with low gate trigger currents
• Radial lead construction in a TO-92 package for standard PCB mounting
• Rated for 400 V off-state blocking capability

Triacs Applications

• Low-power AC load switching circuits
• Light dimmer control systems
• Small appliance motor speed controls

Triacs Procurement Notes

Verify the specific manufacturer source when sourcing this component, as Littelfuse acquired Teccor brand assets. Confirm that the received units match the original Littelfuse specifications rather than legacy Teccor variations. Check for any recent revisions to the datasheet regarding electrical characteristics or pinout configurations to ensure compatibility with existing designs.

Triacs Selection Notes

Select this part for applications requiring reliable AC switching with minimal gate drive power. The 1 A RMS rating suits small loads, while the 400 V breakdown provides adequate margin for standard line voltages. Ensure the thermal management strategy accounts for the TO-92 package's dissipation limits under continuous operation conditions.

Triacs Part Context

This component belongs to the family of logic-sensitive TRIACs designed for efficient control in consumer electronics. It serves as a solid-state alternative to mechanical relays for AC power regulation. The device integrates the triac structure with logic-compatible gate requirements to simplify driver circuit design.

Triacs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.