Q4004R4TP

Triacs Overview

The Littelfuse Q4004R4TP is a bidirectional triac designed for AC power control applications. It features a rated RMS on-state current of 4 A and a repetitive peak off-state voltage of 400 V. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a maximum gate trigger current of 25 mA, a maximum holding current of 30 mA, and a peak on-state voltage of 1.6 V. It is housed in a TO-252-3 (DPAK) surface-mount package with three terminals.

Triacs Feature Summary

• Surface-mount construction in a compact TO-252-3 package for automated assembly
• High thermal stability supporting operation up to 125°C junction temperature
• Robust switching capability with 4A RMS current handling

Triacs Applications

• Solid-state relay output stages
• AC motor speed control circuits
• Lighting dimmer modules

Triacs Procurement Notes

Verify the specific suffix 'R4' against the manufacturer datasheet to confirm the exact gate trigger current specifications and RoHS compliance status. Ensure the ordering quantity aligns with the standard reel packaging requirements specified by Littelfuse for this surface-mount variant.

Triacs Selection Notes

Select this component when a surface-mount solution is required for 4A AC loads. Compare the 25mA gate trigger requirement against available driver capabilities. Verify that the TO-252-3 footprint matches the PCB layout constraints and thermal management design.

Triacs Part Context

This part belongs to the Littelfuse Teccor Qxx04xx series of general-purpose triacs. The series provides standardized performance for low-to-medium power AC switching. The R4 suffix typically denotes specific gate sensitivity and packaging configuration within the broader Q4004 product family.

Triacs Replacement Considerations

Direct replacements must match the 4A/400V rating and TO-252-3 package. Verify gate trigger characteristics closely. Other manufacturers offering equivalent DPAK triacs should be evaluated for pinout compatibility and thermal resistance.