Q2004D4TP

Triacs Overview

The Littelfuse Q2004D4TP is a bidirectional triac rated for 200V repetitive peak off-state voltage and 4A RMS on-state current. It features a gate trigger voltage of 2.5V with a maximum gate trigger current of 25mA. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-251-3 (SOT-89) surface mount package. This component belongs to the Qxx04xx series, designed for general AC power control applications requiring reliable switching in compact form factors.

Triacs Feature Summary

• Surface Mount Design: Utilizes a TO-251-3 package suitable for automated PCB assembly processes.
• High Temperature Operation: Capable of sustained operation at junction temperatures up to +125°C.
• Low Gate Sensitivity: Requires a gate trigger voltage of 2.5V and a maximum current of 25mA for reliable turn-on.

Triacs Applications

• General AC load switching
• Solid state relays
• Lighting dimmer circuits

Triacs Procurement Notes

Verify the specific datasheet revision when sourcing this component, as Littelfuse may update electrical characteristics or pin configurations over time. Confirm that the TO-251-3 footprint matches your PCB design constraints. Ensure the selected supplier provides traceability documentation required for industrial or commercial manufacturing standards.

Triacs Selection Notes

Select the Q2004D4TP when a low-voltage (200V), surface-mount triac is required for controlling AC loads up to 4A. Compare against higher voltage variants like the Q6004 series if system line voltages exceed 200V. Consider thermal management requirements for the SOT-89 package based on the expected RMS current and ambient operating conditions.

Triacs Part Context

This part belongs to the Teccor Qxx04xx family of triacs manufactured by Littelfuse. The series typically includes devices with 4A RMS ratings across various voltage classes, such as 200V, 400V, and 600V options. These components are widely used in consumer electronics and appliance control circuits where space-saving surface mount technology is preferred over through-hole alternatives.

Triacs Replacement Considerations

Direct replacements include other 200V, 4A triacs in TO-251-3 packages from Littelfuse or competitors, provided gate sensitivity and holding current parameters match the original circuit design. Verify that any substitute component meets the same thermal and electrical safety certifications.