QJ6004D4TP

Triacs Overview

The Littelfuse QJ6004D4TP is a bidirectional triac from the QJxx04xx series, designed for AC power control applications. It features a rated repetitive off-state voltage (VDRM) of 600 V and an on-state RMS current (It RMS) of 4 A. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-252-3 surface-mount package. 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. The on-state voltage is specified at 1.6 V, with a non-repetitive peak on-state current capability of 46 A or 55 A depending on conditions.

Triacs Feature Summary

• Integrated thermal protection mechanism for enhanced reliability under surge conditions
• Glass-passivated junctions ensuring long-term parameter stability
• High noise immunity suitable for phase control applications

Triacs Applications

• Solid state relays
• Motor speed controls
• Lighting dimmers

Triacs Procurement Notes

Verify the specific suffix 'QJ' against official Littelfuse documentation to confirm the inclusion of integrated thermal protection, as standard 'Q' series devices may lack this feature. Ensure the TO-252-3 package footprint matches the target PCB design. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement specifications.

Triacs Selection Notes

Select the QJ6004D4TP when thermal protection is required for high-reliability AC switching circuits. Compare the 4 A RMS current rating against load requirements to ensure adequate margin. Verify that the 600 V blocking voltage exceeds the peak line voltage plus transient spikes in the application environment.

Triacs Part Context

This component belongs to the Teccor QJxx04xx family of thyristors, which are distinguished by built-in thermal shutdown capabilities. Unlike standard triacs, these devices incorporate a thermal sensor that disconnects the gate drive if excessive junction temperatures occur, preventing catastrophic failure during short-circuit or overload events.

Triacs Replacement Considerations

Standard Q6004D4RP equivalents lack the integrated thermal protection feature found in the QJ series. Substitution requires verifying if the application demands thermal shutdown functionality. If thermal protection is not critical, verify pinout compatibility between TO-252-3 packages.