QK010R4TP

Triacs Overview

The Littelfuse QK010R4TP is a bidirectional triac designed for power control applications. It features a maximum repetitive peak off-state voltage of 1000V and an on-state current rating of 10A. The device operates with gate trigger currents ranging from 25mA to 25mA, ensuring reliable switching. Key electrical parameters include a holding current of 10uA under VDRM conditions and an on-state voltage drop of 1.6V. The component is housed in a TO-220-2 package, suitable for through-hole mounting on printed circuit boards within industrial and consumer power systems.

Triacs Feature Summary

• Bidirectional conduction capability for AC load control
• High voltage blocking performance for robust operation
• Thermal management via standard through-hole packaging

Triacs Applications

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

Triacs Procurement Notes

Verify the specific Littelfuse datasheet revision to confirm RoHS compliance status and REACH SVHC declarations prior to integration. Ensure the TO-220-2 thermal pad requirements match the target PCB layout for adequate heat dissipation during continuous 10A operation. Confirm that the 1000V voltage rating exceeds the peak line voltage plus transient spikes in the intended application environment.

Triacs Selection Notes

Select this component when high voltage isolation and moderate current handling are required in a single-phase AC system. The TO-220-2 package facilitates manual assembly or wave soldering processes. Evaluate the 1.6V on-state voltage to ensure it meets efficiency targets, as lower drops reduce power loss. Consider the 25mA gate drive requirement to verify compatibility with available microcontroller or driver outputs without additional amplification stages.

Triacs Part Context

This part belongs to the Qxx10xx series of thyristors manufactured by Littelfuse. The series focuses on general-purpose triacs offering balanced performance between voltage blocking and current carrying capacity. The QK010R4TP specifically addresses applications needing 1000V blocking capability, distinguishing it from lower-voltage variants in the broader product family.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for direct equivalents. Verify pinout compatibility and thermal resistance values if replacing with components from other manufacturers. Ensure any substitute maintains the 1000V VDRM rating and 10A IT(RMS) specification to avoid derating issues.