LX803ME

Triacs Overview

The Littelfuse LX803ME is a bidirectional triac belonging to the LX8 series, designed for through-hole mounting in TO-92 packages. It features an RMS on-state current of 800 mA and a non-repetitive peak on-state current of 8 A. The device supports a rated repetitive peak off-state voltage (VDRM) of 600 V with a maximum holding current of 5 mA. Gate triggering specifications include a voltage of 1.3 V and currents ranging from 3 mA to 5 mA. The component operates within a temperature range of -40°C to +110°C, exhibits an on-state voltage of 1.6 V, and maintains a leakage current of 5 µA at VDRM.

Triacs Feature Summary

• Sensitive gate trigger capability for low-power control applications
• High voltage blocking rating suitable for AC line interfacing
• Robust thermal performance across extended industrial temperature ranges

Triacs Applications

• AC motor speed control circuits
• Solid-state relay output stages
• Lighting dimmer switch implementations

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging variations. Ensure the procurement channel provides valid traceability data. Confirm RoHS compliance status directly from the manufacturer's latest release notes before finalizing orders.

Triacs Selection Notes

Select this component when a 600 V blocking voltage is required alongside sensitive gate drive characteristics. Compare the 800 mA RMS rating against load requirements to ensure adequate margin. Verify that the TO-92 package dimensions fit the target PCB layout constraints.

Triacs Part Context

This part belongs to the LX8 family of thyristors manufactured by Littelfuse. The series focuses on providing reliable switching solutions for general-purpose AC power control applications. The LX803ME variant specifically addresses designs requiring higher voltage isolation compared to lower-rated siblings in the same package type.

Triacs Replacement Considerations

Cross-reference with other LX8 series triacs such as LX803DE or LX807MEAP only if voltage ratings align with circuit requirements. Verify pinout compatibility and thermal dissipation capabilities before substituting.