Q4006LTH

Triacs Overview

The Littelfuse Q4006LTH is a Quadrac device, which integrates a triac and a diac trigger within a single package. It functions as a bidirectional AC switch with gate control for either polarity of main terminal voltage. The component features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (ITRMS) of 6 A. It utilizes a TO-220AB package that provides electrical isolation of 2500 V rms from the leads to the mounting surface. The device operates within a temperature range of -40°C to +125°C.

Triacs Feature Summary

• Integrates a diac trigger inside the same package as the triac to eliminate external discrete components.
• Eliminates the need for an external snubber network due to alternistor design characteristics.
• Provides high electrical isolation via a TO-220 package isolated to 2500 V rms from the leads to the mounting surface.

Triacs Applications

• AC switching and phase control applications
• Speed controls requiring noise immunity
• Temperature modulation controls
• Lighting controls

Triacs Procurement Notes

Verify the specific ordering suffix against official Littelfuse documentation to confirm exact pinout and thermal specifications. Confirm RoHS compliance status through the manufacturer's latest product compliance reports before finalizing procurement plans.

Triacs Selection Notes

Select this component when designing circuits that require integrated triggering without external diacs. Ensure the application voltage does not exceed the 400 V rating and that the load current remains within the 6 A RMS limit. Verify that the required isolation level meets the 2500 V rms specification provided by the package.

Triacs Part Context

This part belongs to the Teccor brand QxxxxLTx series developed by Littelfuse. These devices are designed to save assembly time and expense by combining a gated triac and a diac. The series supports AC switching applications where noise immunity is critical, offering current capacities ranging from 4A to 15A and voltage ranges up to 600V.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Littelfuse technical support for verified cross-reference data.