Q4010LTHTP

Triacs Overview

The Q4010LTHTP is a Teccor Quadrac device manufactured by Littelfuse, integrating a triac and a diac trigger within a single TO-220-2 package. It serves as a bidirectional AC switch with a 10A on-state current (I_T(RMS)) rating and a 400V repetitive peak off-state voltage (V_DRM). The device features a breakover voltage range of 33V to 43V and an on-state voltage of 1.6V. It exhibits a low holding current of 10µA at 25°C. The component provides electrical isolation of 2500V rms between the leads and the mounting surface, eliminating the need for external insulators.

Triacs Feature Summary

• Integrated Triac-Diac Design: Combines a triac and a diac trigger in one package to simplify assembly and reduce component count.
• High Noise Immunity: Eliminates the need for external snubber networks, providing robust performance in noise-sensitive environments.
• Electrically Isolated Package: Features a TO-220-2 housing with 2500V rms isolation from the mounting surface, removing the requirement for separate insulators.

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring high noise immunity

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout configuration and thermal characteristics. Ensure that the required gate trigger parameters align with the integrated diac specifications provided in the datasheet. Confirm compliance requirements such as RoHS status directly from the source data before finalizing procurement orders.

Triacs Selection Notes

Select this component when designing circuits that require simplified assembly for AC phase control applications. The integrated nature of the device makes it suitable for designs aiming to minimize board space and assembly steps. Consider the 2500V rms isolation capability when selecting heat sinking solutions, as the tab can be connected to ground or other potentials without additional insulation barriers.

Triacs Part Context

This part belongs to the QxxxxLTx series of Teccor Quadrac devices. These components are specifically engineered to replace discrete triac and diac combinations. The series offers various current ratings from 4A to 15A and voltage ranges up to 600V, all housed in electrically isolated TO-220 packages for enhanced safety and ease of installation.

Triacs Replacement Considerations

Direct replacements must match the integrated triac-diac functionality and the 400V/10A ratings. Verify that substitute parts maintain the same breakover voltage tolerance and isolation voltage specifications to ensure circuit compatibility and safety standards are met.

Triacs FAQ

Does the Q4010LTHTP require an external snubber network?

No, the Quadrac device eliminates the need for an external snubber network due to its internal design.

What is the electrical isolation rating of the TO-220 package?

The package provides 2500V rms isolation from the leads to the mounting surface.

How does the Q4010LTHTP differ from a standard triac?

It includes a built-in diac trigger, allowing it to function as a complete AC switching unit without needing a discrete diac.