L4004D3TP

Triacs Overview

The Littelfuse L4004D3TP is a bidirectional triac designed for AC power control applications. It features a standard gate sensitivity with an RMS on-state current rating of 4 A and a repetitive peak off-state voltage (VDRM) of 400 V. The device exhibits a maximum on-state voltage of 1.6 V, a gate trigger voltage (VGT) of 2 V, and a gate trigger current (IGT) of 3 mA. It operates within a temperature range of -40°C to +110°C and is housed in a TO-251-3 surface-mount package.

Triacs Feature Summary

• Standard gate sensitivity configuration suitable for general-purpose AC switching
• Surface-mount TO-251-3 package optimized for automated PCB assembly
• High thermal stability supporting operation up to 110°C junction temperature

Triacs Applications

• General AC load switching circuits
• Solid-state relay input stages
• Lighting dimmer controls

Triacs Procurement Notes

Verify the specific suffix D3 against official Littelfuse documentation to confirm gate characteristics. Ensure the ordering part number matches the required TO-251-3 package variant. Cross-reference datasheet revisions to confirm compliance with current RoHS and REACH standards before finalizing procurement orders.

Triacs Selection Notes

Select this component when a 4 A RMS current capacity and 400 V blocking voltage are required in a compact surface-mount form factor. Compare gate trigger current specifications against available drive circuitry to ensure reliable turn-on. Evaluate thermal management requirements given the 110°C maximum operating limit and the thermal resistance of the TO-251-3 package.

Triacs Part Context

This triac belongs to the Lxx04xx series from Littelfuse, which focuses on standard gate devices. It shares the 4 A current rating with other members but differs in packaging and specific gate parameters compared to the QJ or L4004V3TP variants. The D3 suffix typically denotes specific manufacturing lot or minor parameter variations within the standard gate family.

Triacs Replacement Considerations

Direct substitutes include the L4004V3TP for similar electrical performance in a comparable package. Alternative packages such as TO-220 or TO-92 may require mechanical adaptation. Verify that any replacement maintains the 400 V VDRM and 4 A It(RMS) ratings.