Q4006LT

Triacs Overview

The Q4006LT is a Quadrac, an internally triggered triac manufactured by Littelfuse. It integrates a diac and a triac into a single TO-220 package to simplify circuit design. The device features a 400V off-state voltage rating and supports a continuous on-state current of 6A RMS. It is designed for AC switching and phase control applications, eliminating the need for discrete external triggering components.

Triacs Feature Summary

• Integrates diac and triac functions in a single component
• Designed for AC switching and phase control applications
• Provides internal gate triggering mechanism

Triacs Applications

• Motor speed controls
• Temperature modulation controls
• Lighting controls

Triacs Procurement Notes

Verify the specific suffix (e.g., LT, L4TP) against the official Littelfuse datasheet to ensure correct packaging and electrical characteristics. Confirm that the required voltage and current ratings match the application requirements before procurement. Check for RoHS compliance status if environmental regulations apply to the end product.

Triacs Selection Notes

Select this component when a compact solution for AC phase control is required without external trigger circuits. Ensure the load current does not exceed the 6A RMS rating. Consider thermal management requirements due to the TO-220 package form factor. Verify compatibility with the intended control logic for phase angle firing.

Triacs Part Context

This part belongs to the QxxxxLTx series of Quadracs from Littelfuse. These devices are engineered to replace discrete diac-triac combinations, reducing assembly time and component count. The series is widely used in consumer electronics and industrial equipment requiring reliable AC power regulation.

Triacs Replacement Considerations

Q4006L4TP is a documented alternative within the same family offering similar electrical specifications.