L4004D8RP

Triacs Overview

The Littelfuse L4004D8RP is a bidirectional triac designed for AC power control applications. It features a 400 V rated repetitive off-state voltage and supports an RMS on-state current of 4 A. The device operates within a junction temperature range of -40 °C to +150 °C. Key electrical parameters include a maximum gate trigger current of 20 mA, a holding current of 10 mA, and a latching current of 10 mA. It exhibits a typical on-state voltage of 1.4 V and a low leakage current of 5 µA at rated voltage. The component is housed in a surface-mount TO-252 (DPAK) package.

Triacs Feature Summary

• Integrated sensing capability with defined gate trigger thresholds
• High thermal stability supporting operation up to 150 °C
• Glass-passivated junctions for parameter stability

Triacs Applications

• AC motor speed controls
• Lighting dimmer circuits
• Temperature modulation systems

Triacs Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm pinout and electrical characteristics. Ensure compatibility with standard SMD reflow profiles. Confirm RoHS compliance status through official Littelfuse datasheets prior to integration into final assemblies.

Triacs Selection Notes

Select this component for designs requiring a compact surface-mount solution for moderate AC power switching. The 4 A rating suits small appliances and lighting loads. Verify that the 400 V blocking voltage meets the peak line voltage requirements of the target application circuit.

Triacs Part Context

This part belongs to the Littelfuse Teccor brand family of thyristors. It serves as a surface-mount alternative to through-hole triacs like the L4004R5, offering similar electrical performance in a DPAK package suitable for automated PCB assembly processes.

Triacs Replacement Considerations

The LJ4004D8TP is a verified equivalent from the same manufacturer series. Both share identical 4 A/400 V ratings and TO-252 packaging. Cross-reference datasheets to ensure functional interchangeability.