L4X8E5AP

Triacs Overview

The Littelfuse L4X8E5AP is a 0.8 Amp sensitive triac housed in a TO-92 package with an AP (Ammo Pack) suffix indicating the specific packing mode. It operates as a bi-directional solid-state switch designed for AC switching and phase control applications, including motor speed modulation, temperature controls, and lighting systems. The device guarantees gate control in Quadrants I & IV, enabling direct drive from digital microprocessor circuitry or opto-couplers. Key electrical parameters include a maximum RMS on-state current of 0.8 A at a case temperature of 50°C, voltage blocking capabilities ranging from 400 V to 600 V, and a maximum DC gate trigger current of 5 mA across all quadrants.

Triacs Feature Summary

• Sensitive gate design ensuring reliable triggering in Quadrants I & IV for digital control compatibility
• RoHS compliant construction with glass-passivated junctions
• Capable of handling surge currents up to 10 A

Triacs Applications

• AC solid-state switches
• Lower current heating controls
• Home and white goods appliances

Triacs Procurement Notes

Verify the component designation against official Littelfuse documentation to confirm the AP suffix corresponds to Ammo Pack packaging rather than standard reel or bulk configurations. Ensure that the selected voltage rating aligns with the specific application requirements, as the series supports both 400V and 600V variants. Cross-reference the part number with authorized distributors to validate authenticity and traceability before finalizing procurement orders.

Triacs Selection Notes

Select this component when designing circuits requiring direct interfacing with low-power digital logic or microprocessors due to its sensitive gate characteristics. Evaluate the thermal management strategy carefully, as the device relies on case temperature ratings for current derating. Confirm that the chosen voltage rating provides adequate margin for the peak line voltages present in the target AC power system to ensure long-term reliability.

Triacs Part Context

This component belongs to the LxX8Ex series of 0.8 Amp sensitive triacs manufactured by Littelfuse. The series is engineered specifically for applications where precise phase control and low gate drive currents are necessary. The TO-92 package offers a compact radial leaded form factor suitable for through-hole mounting on printed circuit boards used in consumer electronics and industrial control modules.

Triacs Replacement Considerations

Compatible substitutes within the same family include the L4X8E3AP and L4X8E6AP, which share identical physical dimensions and basic electrical ratings but differ in gate sensitivity thresholds. Verify that any replacement maintains the required quadrant triggering capabilities and voltage blocking specifications for the specific circuit design.