Q4004D4RP

Triacs Overview

The Littelfuse Q4004D4RP 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 of 400 V and an on-state RMS current of 4 A. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a maximum holding current of 30 mA, a gate trigger voltage of 2.5 V, and a gate trigger current ranging from 25 mA to 50 mA. On-state voltage is specified at 1.6 V, with non-repetitive peak currents of 46 A and 55 A.

Triacs Feature Summary

• Bidirectional switching capability for AC power control circuits
• Surface-mount construction in a compact D-Pak package for automated assembly
• High thermal stability supporting operation up to 125°C

Triacs Applications

• Lighting dimmer controls
• Solid-state relays
• Motor speed control systems

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number Q4004D4RP with official Littelfuse documentation. Confirm that the ordering suffix matches the required reel packaging configuration. Ensure the received units correspond to the specified Teccor series specifications before integration into production lines.

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 sensitivity requirements against the 25 mA to 50 mA trigger current range. Evaluate thermal management needs relative to the 125°C maximum operating temperature limit for the intended application environment.

Triacs Part Context

This triac belongs to the Littelfuse Teccor Qxx04xx family of standard triacs. The series provides standardized performance characteristics for general-purpose AC switching. The specific model denotes the 400 V voltage class and 4 A current rating within this product line.

Triacs Replacement Considerations

Direct substitutes may include other 400 V, 4 A triacs in TO-252 packages from the same manufacturer or compatible vendors. Verify pinout compatibility and electrical parameter equivalence before substitution.