L4004F52

Triacs Overview

The Littelfuse L4004F52 is a four-quadrant Triac belonging to the Teccor Lxx04F series, designed for AC power control applications. It features a TO-202-3 (TO-92) through-hole package with three leads. The device supports a rated repetitive peak off-state voltage of 400 V and an RMS on-state current of 4 A. Key electrical parameters include a maximum holding current of 10 mA and a gate trigger current range of 5 mA to 10 mA. It operates within a junction temperature range of -40°C to +110°C.

Triacs Feature Summary

• Four-quadrant sensitivity enables reliable triggering across all gate polarities and MT2 polarities.
• High surge capability allows handling of inrush currents typical in resistive and inductive loads.
• Robust thermal design in a standard TO-202-3 package facilitates heat dissipation for continuous operation.

Triacs Applications

• Solid-state relays requiring compact form factors
• Lighting dimmers for incandescent or low-power LED loads
• Small motor speed control circuits

Triacs Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm lot codes and date codes to ensure compliance with RoHS directives if required. Request test reports for critical parameters such as gate trigger current and holding current when sourcing from authorized distributors.

Triacs Selection Notes

Select this part for applications requiring 4 A continuous current in a small three-lead package. Ensure the circuit design accounts for the 10 mA maximum holding current to prevent unintended turn-off. Verify that the gate drive circuit can supply at least 10 mA to guarantee reliable triggering under worst-case temperature conditions.

Triacs Part Context

The L4004F52 is part of the Teccor Lxx04F family of general-purpose Triacs. This series is widely used in consumer electronics and industrial controls where moderate current switching is needed. The F suffix typically denotes specific gate current characteristics within the 400V/4A class.

Triacs Replacement Considerations

Direct replacements include other 400V 4A four-quadrant Triacs in TO-202-3 packages with compatible gate trigger currents. Verify pinout compatibility and thermal resistance values before substituting with parts from different manufacturers.