S4006LTP

Overview

The Littelfuse S4006LTP is a silicon-controlled rectifier (SCR) designed for general-purpose power control applications. It features a standard TO-220AB package with an isolated mounting tab, facilitating thermal management in through-hole circuit designs. The device is rated for a repetitive peak off-state voltage of 400V and a continuous on-state current of 6A. Key electrical characteristics include a maximum gate trigger current of 200µA and a holding current of 6mA. These specifications define its operational limits within thyristor circuits.

Feature Summary

• Standard TO-220AB isolation package for effective heat dissipation
• Low gate sensitivity enabling direct drive from logic circuits
• High surge current capability for robust transient handling

Applications

• General purpose AC/DC motor speed control
• Lighting dimmer circuits
• Solid state relay inputs

Procurement Notes

Verify the specific suffix 'LTP' against the manufacturer's official datasheet to confirm pinout orientation and packaging details. Ensure the procurement channel provides traceable documentation matching the Littelfuse part number to avoid counterfeit components.

Selection Notes

Select this component when a 6A RMS current rating and 400V blocking voltage are required in a standard through-hole configuration. Compare the 200µA gate trigger requirement against available drive voltages to ensure reliable turn-on without excessive gate current.

Part Context

This SCR belongs to the Littelfuse S4006 series, which offers standardized ratings for industrial and consumer power switching. The series provides consistent performance across various voltage grades, allowing designers to scale blocking voltage requirements while maintaining identical current and package footprints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with generic equivalents by matching the 6A current, 400V voltage, and TO-220 package constraints.