Q4004D3RP

Triacs Overview

The Littelfuse Q4004D3RP is a bidirectional triac from the Teccor Qxx04xx series, designed for surface-mount applications in the TO-252-3 (D-Pak) package. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 4 A. The device supports a non-repetitive peak on-state current ranging from 46 A to 55 A, with a maximum holding current of 30 mA. Gate triggering parameters include a voltage (Vgt) of 2.5 V and a current (Igt) between 25 mA and 50 mA. It operates within a junction temperature range of -40 °C to +125 °C, ensuring reliable performance in industrial power control circuits.

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 gate sensitivity with defined low-voltage triggering characteristics
• Standardized electrical ratings compatible with general-purpose AC load switching

Triacs Applications

• Solid-state relay output stages
• General-purpose AC motor speed control
• Resistive and inductive load switching in industrial equipment

Triacs Procurement Notes

Verify the specific suffix D3RP against official Littelfuse documentation to confirm pinout orientation and internal die specifications. Confirm RoHS compliance status via the manufacturer's current datasheet revision. Ensure ordering quantities align with standard reel packaging requirements specified by the supplier. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 4 A continuous current rating are required in a surface-mount form factor. Compare gate trigger current limits against the driving circuit capabilities to ensure reliable turn-on. Evaluate thermal management needs based on the TO-252-3 package dissipation characteristics. Consider alternative voltages or packages if higher current or through-hole mounting is necessary.

Triacs Part Context

This triac belongs to the Teccor Qxx04xx family, which standardizes 4 A devices across various voltage ratings. The Q4004D3RP specifically addresses the 400 V segment of this lineup. It shares common electrical characteristics with siblings like the Q6004D3RP and Q8004D3RP, differing primarily in breakdown voltage. This series is widely used in cost-sensitive power control designs requiring standardized SMD footprints.

Triacs Replacement Considerations

Direct substitutes within the same series include Q6004D3RP and Q8004D3RP for higher voltage tolerance. For equivalent 400 V performance, verify compatibility with other manufacturers' TO-252-3 triacs having matching It RMS and VDRM ratings. Always validate pinout alignment and thermal resistance values before substitution.