L4X8E5RP

Triacs Overview

The Littelfuse L4X8E5RP is a sensitive bidirectional triac designed for AC switching and phase control applications. It features an RMS on-state current of 0.8 A and supports rated repetitive off-state voltages (VDRM/VRRM) ranging from 400 V to 600 V. The device guarantees gate trigger currents (IGT) of 5 mA in Quadrants I, II, and III, and 5 mA in Quadrant IV. It operates within a junction temperature range of -65°C to 110°C and utilizes glass-passivated junctions for reliability. Packaged in a TO-92 form factor with radial leads, it is supplied in reel packs.

Triacs Feature Summary

• Sensitive gate design ensures reliable triggering across all four quadrants for digital control circuitry compatibility.
• Glass-passivated junctions provide long-term parameter stability and environmental protection.
• Capable of handling non-repetitive surge peak on-state currents up to 10 A at 60 Hz.

Triacs Applications

• Motor speed controls
• Temperature modulation controls
• Lighting controls
• Static switching relays

Triacs Procurement Notes

Verify the specific voltage rating required for the application, as the series covers both 400 V and 600 V options. Confirm that the TO-92 package and reel packaging format align with assembly requirements. Ensure the sensitive gate characteristics match the driving circuit's output capabilities for proper quadrant operation.

Triacs Selection Notes

Select this component when low gate drive current is necessary for microprocessor or opto-coupler interfaces. The 0.8 A current rating suits lower power AC loads. Consider the thermal resistance values for heat sinking if operating near maximum current limits. Verify the voltage rating against peak line voltages to ensure adequate safety margins.

Triacs Part Context

This part belongs to the LxX8Ex series of 0.8 Amp sensitive triacs manufactured by Littelfuse. The 'L' prefix denotes a sensitive triac, while 'X8' indicates the 0.8 A current rating. The 'E' suffix specifies the TO-92 package type, and '5' identifies the 5 mA gate sensitivity level. This series is distinct from standard triacs which require higher gate currents.

Triacs Replacement Considerations

Compatible substitutes include other parts from the LxX8Ex family with matching voltage ratings, such as L4X8E3RP or L4X8E6RP, provided their gate sensitivity specifications meet the circuit design requirements.

Triacs FAQ

What is the maximum gate trigger current for the L4X8E5RP?

The maximum gate trigger current (IGT) is 5 mA for Quadrants I, II, and III, and 5 mA for Quadrant IV.

Does the L4X8E5RP operate in all four quadrants?

Yes, as a sensitive triac, it is designed to guarantee gate control in Quadrants I, II, III, and IV.

What is the storage temperature range for this device?

The storage temperature range is -65°C to 150°C.