L4X3

Triacs Overview

The L4X3 is a sensitive gate TRIAC from Littelfuse, rated for 400V and 0.8A in a DO-214 surface-mount package. It features a five-quadrant sensitivity of 5-5-5-5mA, ensuring reliable triggering across all input conditions. Key electrical parameters include a gate non-trigger voltage of 0.2V, a dv/dt rating of 15 V/µs at 100°C, and a maximum gate trigger current (Igtm) of 1 mA. The device exhibits low off-state leakage, with IDRM specified at 0.002 mA at 25°C under VDRM conditions.

Triacs Feature Summary

• Sensitive gate design with five-quadrant triggering capability
• Surface-mount construction in a compact DO-214 package
• Low gate trigger current for efficient control circuitry

Triacs Applications

• Lighting dimmer circuits
• Motor speed control systems
• Thermostat regulation

Triacs Procurement Notes

Verify the specific ordering suffix to confirm the exact package variant and tape/reel specifications. Ensure the component matches the required voltage and current ratings for the target application. Cross-reference the datasheet revision date to confirm parameter consistency. Confirm availability through authorized Littelfuse distributors to guarantee authenticity.

Triacs Selection Notes

Select this component for applications requiring low-power gate drive and surface-mount assembly. The 400V rating suits low-voltage AC switching tasks. Consider the 0.8A continuous current limit when designing thermal management. The sensitive gate characteristic simplifies driver requirements compared to standard gate devices.

Triacs Part Context

This part belongs to Littelfuse's low-power TRIAC series, designed for general-purpose AC power control. It complements other thyristor products in the manufacturer's portfolio by offering a balance of sensitivity and robustness in a small form factor suitable for modern consumer electronics.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may differ in gate sensitivity or dv/dt ratings. Verify pinout compatibility and thermal characteristics before integrating alternative components into existing designs.