Q4004L4TP

Triacs Overview

The Littelfuse Q4004L4TP is a four-quadrant TRIAC designed for AC power control applications. It features a TO-220 package with through-hole mounting and three pins. The device has a rated average on-state current of 4 A and a repetitive peak reverse voltage of 400 V. Key electrical parameters include a maximum gate trigger current of 10 mA, a maximum gate trigger voltage of 1.3 V, and a peak on-state voltage of 1.6 V. It supports a surge current rating of 55 A and maintains a holding current of 20 mA. The component operates within a temperature range of -40°C to 125°C.

Triacs Feature Summary

• Four-quadrant triggering capability ensures reliable gate activation across all polarity combinations.
• Robust thermal performance in a TO-220 package suitable for high-power dissipation scenarios.
• High surge current handling capacity protects against transient overloads during startup.

Triacs Applications

• General purpose AC motor speed control
• Solid state relay output stages
• Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific suffix 'TP' against the manufacturer's official datasheet to confirm tape-and-reel packaging or specific binning requirements. Ensure the ordered part matches the exact voltage and current ratings required by the circuit design. Cross-reference the pinout configuration with the TO-220 standard to prevent installation errors during assembly.

Triacs Selection Notes

Select this component when a 4 A RMS current rating and 400 V blocking voltage are sufficient for the load. Consider the TO-220 package size for adequate heat sinking capabilities without requiring complex thermal management solutions. Evaluate the 10 mA gate trigger current to ensure compatibility with the driving logic level and available drive strength in the control circuit.

Triacs Part Context

This part belongs to the Littelfuse Q series of TRIACs, which are widely used in industrial and consumer power control systems. The Q4004L4TP variant specifically targets applications requiring moderate current handling with robust switching characteristics. It complements other components in the power semiconductor portfolio by providing a cost-effective solution for AC regulation tasks.

Triacs Replacement Considerations

Direct substitutes may include other 4 A, 400 V TRIACs in TO-220 packages from manufacturers such as STMicroelectronics or Vishay. Verify that any replacement maintains identical four-quadrant triggering and similar gate trigger specifications to ensure circuit compatibility without redesign.

Triacs FAQ

What is the maximum gate trigger current for the Q4004L4TP?

The maximum gate trigger current (Igt) is specified as 10 mA.

Does the Q4004L4TP support four-quadrant triggering?

Yes, it is a four-quadrant TRIAC, allowing gate triggering regardless of the polarity of the main terminal voltages.

What is the operating temperature range for this component?

The device is rated for operation between -40°C and 125°C.