Q6008LH4TP

Triacs Overview

The Littelfuse Q6008LH4TP is a Quadrac device, which integrates a triac and a diac trigger within a single package. It operates with a rated repetitive off-state voltage (VDRM) of 600 V and an on-state RMS current (It RMS) of 8 A. The device features a maximum holding current (Ih) of 35 mA and a gate trigger current (Igt) of 35 mA. It has a maximum on-state voltage of 1.6 V and a leakage current of 10 uA at VDRM. The component supports a non-repetitive peak on-state current of 83 A or 100 A depending on the pulse width. It functions within a junction temperature range of -40°C to +125°C and utilizes a TO-220AB-3 through-hole package.

Triacs Feature Summary

• Integrated diac trigger eliminates the need for discrete components and external snubber networks.
• Electrically isolated TO-220 package provides 2500 V rms isolation from the mounting surface.
• Glass-passivated junctions ensure long-term parameter stability and reliability.

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm package type and thermal characteristics. Ensure the design accounts for the integrated diac functionality, as this differs from standard triacs. Confirm RoHS compliance status directly from the manufacturer's datasheet before finalizing procurement specifications.

Triacs Selection Notes

Select this component when circuit simplicity and noise immunity are priorities in AC phase control designs. The integrated diac simplifies layout by removing external trigger components. Verify that the 600 V blocking voltage and 8 A current rating exceed the application's peak requirements. Consider the TO-220 package for adequate heat dissipation in through-hole implementations.

Triacs Part Context

This part belongs to the Teccor QxxxxLTx series of Quadrac devices developed by Littelfuse. These devices combine a bidirectional AC switch with an internal gate control mechanism. The series is designed to replace separate triac and diac assemblies, reducing assembly time and cost while maintaining high reliability in industrial and consumer AC control environments.

Triacs Replacement Considerations

Direct substitutes include other Littelfuse Quadrac devices within the QxxxxLTx family, such as Q6008LTH or Q6008LTTP, provided they match the 600 V/8 A ratings and TO-220 package. Cross-brand replacements require verifying equivalent integrated trigger characteristics and isolation voltages.

Triacs FAQ

What is the primary advantage of the Q6008LH4TP over a standard triac?

It integrates a diac trigger inside the package, eliminating the need for external discrete components and snubber networks, which simplifies the circuit design and improves noise immunity.

Does the Q6008LH4TP require external insulation for mounting?

No, the TO-220 package is electrically isolated to 2500 V rms from the leads to the mounting surface, eliminating the need for separate insulators.

What is the maximum operating junction temperature for this device?

The maximum operating junction temperature is +125°C.