L4004D5TP

Triacs Overview

The Littelfuse L4004D5TP is a four-quadrant logic level triac designed for power control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current (IT(RMS)) of 4 A. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a maximum gate trigger voltage (VGT) of 1.3 V and a gate trigger current (IGT) of 5 mA, facilitating direct interface with low-power logic circuits. The component is housed in a TO-252-3 (DPAK) surface-mount package.

Triacs Feature Summary

• Logic-level sensitivity enables direct drive from standard TTL or CMOS logic outputs without additional amplification stages.
• Four-quadrant operation ensures reliable triggering across all combinations of main terminal polarity and gate signal phase.
• Surface-mount DPAK packaging supports automated assembly and compact printed circuit board layouts.

Triacs Applications

• Solid-state relays requiring low-power logic interface
• Lighting dimmer circuits for residential and commercial fixtures
• Motor speed control systems for small appliances

Triacs Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm pinout and thermal characteristics. Confirm RoHS compliance status through official Littelfuse datasheets prior to integration. Ensure ordering quantities align with distributor tube packaging standards rather than reel formats.

Triacs Selection Notes

Select this component when a 400 V blocking capability and 4 A continuous current rating are required in a surface-mount form factor. The logic-level gate sensitivity distinguishes it from standard triacs that require higher gate currents. Evaluate thermal dissipation requirements for the TO-252 package under expected load conditions.

Triacs Part Context

This part belongs to the Teccor series of thyristors manufactured by Littelfuse. It shares functional similarities with other 4A, 400V triacs but is distinguished by its specific logic-level gate thresholds and DPAK mechanical footprint. It serves as a solid-state switching solution for AC power regulation.

Triacs Replacement Considerations

Direct replacements must match the 400 V/4 A rating and TO-252-3 package. Verify gate trigger specifications if substituting with non-logic-level triacs, as higher IGT may require driver circuit modifications. Cross-reference with equivalent models from other manufacturers ensuring identical pin configurations.