QJ6004V4TP

Triacs Overview

The Littelfuse QJ6004V4TP is a bidirectional triac from the QJxx04xx series, designed for AC switching and phase 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 temperature range of -40 °C to +125 °C and utilizes a TO-251-3 (DPAK) through-hole compatible package. Key electrical characteristics 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. Non-repetitive peak on-state currents are specified at 46 A and 55 A under different conditions.

Triacs Feature Summary

• Integrated Quadrac design combining a triac and diac trigger in a single package
• Eliminates the need for external snubber networks due to alternistor technology
• High noise immunity suitable for sensitive phase control circuits

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the specific datasheet for the QJxx04xx series to confirm exact pinout and thermal resistance values for the TO-251-3 package. Ensure that the integrated diac trigger voltage matches the requirements of the target application circuit. Confirm RoHS compliance status directly with the manufacturer documentation before finalizing procurement specifications.

Triacs Selection Notes

Select this component when a compact solution for AC phase control is required without discrete diac assembly. The 600 V rating suits standard mains voltage applications. Consider the TO-251-3 package for space-constrained designs compared to larger TO-220 alternatives. Verify that the 4 A current rating meets the load requirements of the specific equipment.

Triacs Part Context

This part belongs to the Teccor QJxx04xx series of Quadrac devices manufactured by Littelfuse. These devices integrate a diac trigger inside the triac package to simplify circuit design. The series offers current capacities from 4 A to 15 A and voltage ratings up to 600 V, targeting applications where noise immunity and simplified assembly are critical.

Triacs Replacement Considerations

Direct substitutes may include other parts from the QJxx04xx series with matching voltage and current ratings. Cross-reference with similar integrated triac-diac combinations from other manufacturers if package compatibility allows.