L401E375

Triacs Overview

The Littelfuse L401E375 is a logic-level sensitive gate TRIAC designed for AC power control applications. It features a peak repetitive off-state voltage of 400 V and an on-state RMS current rating of 1 A. The device utilizes a TO-92 through-hole package, facilitating easy integration into standard circuit boards. Key electrical characteristics include a holding current of 3 mA and a gate trigger current range of 3 to 3 mA, ensuring reliable switching with low-power logic signals.

Triacs Feature Summary

• Logic-sensitive gate architecture enables direct interface with digital logic circuits without requiring additional driver components.
• Robust 400 V off-state voltage rating provides adequate isolation for low-voltage AC power control systems.
• Compact TO-92 through-hole package supports efficient PCB layout and thermal management in space-constrained designs.

Triacs Applications

• Lighting dimmer circuits
• Small motor speed control
• Thermostat regulation

Triacs Procurement Notes

Verify the specific suffix E375 against the manufacturer's official datasheet to confirm pinout and electrical tolerances. Ensure the procurement channel provides traceable documentation matching Littelfuse Inc. specifications. Cross-reference the part number with authorized distributors to avoid counterfeit components that may exhibit degraded performance or incorrect ratings.

Triacs Selection Notes

Select this component when low-current AC switching is required alongside logic-level input compatibility. The 1 A RMS rating suits light loads such as incandescent lamps or small resistive heaters. Consider the TO-92 package constraints for thermal dissipation requirements. Evaluate the 400 V blocking capability against the maximum line voltage present in the target application circuit.

Triacs Part Context

This device belongs to the Littelfuse TRIAC family, specifically engineered for sensitive gate operation. It serves as a cost-effective solution for basic AC power modulation tasks. The component complements other protection and control devices within the manufacturer's portfolio, offering a standardized interface for consumer electronics and industrial control modules requiring simple switching functionality.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may differ in gate sensitivity or voltage ratings. Verify that any substitute maintains the TO-92 form factor and 400 V / 1 A specifications to ensure circuit compatibility without redesign.

Triacs FAQ

What is the typical gate trigger current for this TRIAC?

The gate trigger current is specified at 3 mA, allowing activation by low-power logic outputs.

Does this component support phase-angle control?

Yes, the sensitive gate design facilitates phase-angle control applications such as lighting dimmers.