Q4010LT

Triacs Overview

The Littelfuse Q4010LT is a bidirectional triac belonging to the Teccor QxxxxLTx series, designed for AC power control applications. It features a 400V repetitive peak off-state voltage and a 10A RMS on-state current rating. The device operates with a gate trigger voltage range of 33V to 43V and exhibits a low on-state voltage of 1.6V. It is housed in a TO-220-2 package and maintains a maximum off-state leakage current of 10µA under specified conditions.

Triacs Feature Summary

• Bidirectional switching capability for AC load control
• High thermal robustness via TO-220-2 leaded packaging
• Low conduction loss characterized by 1.6V on-state voltage

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm exact electrical tolerances and package variations. Ensure the ordering part number matches the required voltage and current ratings for the target circuit design before procurement.

Triacs Selection Notes

Select this component based on its 400V blocking capability and 10A continuous current handling. Evaluate the thermal management requirements associated with the TO-220-2 package to ensure adequate heat dissipation during operation.

Triacs Part Context

This triac is part of the Teccor QxxxxLTx family from Littelfuse, engineered for general-purpose AC power switching. The series emphasizes reliability and standard interface compatibility for industrial and consumer electronics power control systems.

Triacs Replacement Considerations

Consult official substitution guides for equivalent Triacs with matching 400V/10A ratings and TO-220-2 footprints. Verify gate sensitivity and thermal characteristics match the original design constraints.