L4X8E3AP

Triacs Overview

The L4X8E3AP is a bidirectional triac from the Littelfuse LX series, designed for AC power control applications. It features a 400 V rated repetitive off-state voltage and an RMS on-state current of 800 mA. The device utilizes a sensitive gate structure with a typical gate trigger current of 3-3-3-3 mA, enabling direct interfacing with microprocessor drivers. Packaged in a TO-92-3 through-hole case, it operates within a junction temperature range of -65 °C to +110 °C. Key electrical parameters include a maximum holding current of 10 mA and a non-repetitive peak on-state current of 8.3 A or 10 A depending on the specific test condition.

Triacs Feature Summary

• Sensitive gate architecture allows for low-power triggering compatible with standard logic outputs.
• Robust thermal performance supports operation in high-temperature environments up to 110 °C.
• Compact TO-92-3 package facilitates easy integration into space-constrained printed circuit boards.

Triacs Applications

• Solid-state relays requiring compact switching elements
• Lighting control circuits for residential and commercial fixtures
• Motor speed control systems for small appliances

Triacs Procurement Notes

Verify the exact suffix 'AP' against the official Littelfuse datasheet to confirm packaging or tape-and-reel specifications. Ensure the ordering quantity aligns with manufacturer minimum order requirements. Cross-reference the Mouser part number 576-L4X8E3 to validate component authenticity and availability status before finalizing procurement plans.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 800 mA continuous current are sufficient for the load. The sensitive gate characteristic makes it suitable for low-power drive circuits. Compare the TO-92-3 package constraints with board layout requirements. Verify that the 10 mA holding current meets the minimum load current needs of the application to prevent unintended turn-off.

Triacs Part Context

This triac belongs to the LX series of bidirectional switches manufactured by Littelfuse Inc. The series is engineered for general-purpose AC power switching in consumer electronics and industrial controls. The L4X8E3AP variant specifically denotes the package and trailing configuration within this product family, sharing core electrical characteristics with other members like the L4X8E6.

Triacs Replacement Considerations

The L4X8E6 is a documented alternative within the same series, offering identical voltage and current ratings but with a different gate trigger current profile (5-5-5-10 mA). Designers must verify that the gate drive circuit can accommodate the higher trigger current requirement of the replacement part without modification.