L401E8

Triacs Overview

The L401E8 is a sensitive gate triac from the Littelfuse Teccor line, designed for logic-level triggering applications. It features a 400V repetitive peak off-state voltage and supports an on-state current of 1A. The device utilizes a TO-92 (TO-226AA) through-hole package with radial leads. It operates within a temperature range of -65°C to +110°C. The gate sensitivity is specified at 10mA, ensuring reliable activation with low-power control signals.

Triacs Feature Summary

• Logic-sensitive gate architecture enables direct interfacing with microcontrollers and digital logic circuits without additional driver components.
• Robust thermal performance allows stable operation across extended industrial temperature ranges.

Triacs Applications

• Lighting dimmer controls
• Small motor speed regulation
• Thermostat switching

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm exact electrical characteristics and packaging configuration. Ensure the component meets RoHS compliance requirements if applicable to your design. Cross-reference the part number with authorized distributors to confirm availability and authenticity before finalizing procurement plans.

Triacs Selection Notes

Select this component when a compact, low-current triac is required for logic-triggered AC power control. The TO-92 package suits space-constrained PCB layouts. Verify that the 1A current rating and 400V blocking voltage align with the load specifications. Consider the 10mA gate trigger requirement to ensure compatibility with the driving circuit's output capability.

Triacs Part Context

This device belongs to the Littelfuse Teccor series of sensitive gate triacs, which are engineered for high-reliability power switching in consumer and industrial electronics. The series offers various voltage and current ratings packaged in standard leaded formats. The L401E8 specifically targets applications requiring precise logic interface integration with minimal external support circuitry.

Triacs Replacement Considerations

Consult the Littelfuse official substitution guide for verified equivalent part numbers. Do not assume cross-compatibility based solely on package type or generic voltage ratings. Verify gate sensitivity and current handling capabilities match the original design requirements before implementing any alternative components.

Triacs FAQ

What is the gate trigger current for the L401E8?

The gate trigger current is specified at 10mA, allowing for direct drive from low-power logic sources.

Does the L401E8 require a heat sink for normal operation?

Due to its 1A current rating and TO-92 package, a heat sink is typically not required for standard ambient conditions unless the duty cycle is exceptionally high.