S4006RS2TP

Overview

The S4006RS2TP is a silicon-controlled rectifier (SCR) manufactured by Littelfuse, designed for high-reliability power control applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capacity of 6 A. The device utilizes a sensitive gate architecture with a maximum gate trigger current of 200 µA and a gate trigger voltage of 800 mV. Electrical characteristics include a maximum holding current of 6 mA and a forward voltage drop of 1.6 V at rated current. The component operates within a temperature range of -40°C to +110°C and is housed in a TO-251 surface-mount package.

Feature Summary

• Sensitive gate structure enabling reliable triggering with low gate current requirements
• Surface-mount construction in a compact TO-251 package for automated assembly
• High thermal stability supporting operation across extended industrial temperature ranges

Applications

• AC motor speed control circuits
• Solid-state relay output stages
• General-purpose AC power switching

Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm pinout and electrical tolerances. Ensure the procurement source provides valid RoHS compliance declarations. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing orders.

Selection Notes

Select this component when a 6 A RMS SCR is required in a surface-mount form factor. The 400 V rating suits low-voltage AC systems. Verify that the circuit design accommodates the 200 µA gate trigger sensitivity. Confirm that the TO-251 thermal dissipation capabilities meet the application's junction temperature constraints under continuous load conditions.

Part Context

This device belongs to the Littelfuse Sxx06xSx series of thyristors. The series offers various voltage ratings and package options for power control needs. The RS2TP designation indicates a specific surface-mount variant within this family, distinct from through-hole or isolated tab versions found in other series configurations.

Replacement Considerations

Direct replacements must match the 6 A RMS current, 400 V voltage, and TO-251 package. Verify gate trigger parameters to ensure compatibility with existing drive circuits. Consult Littelfuse datasheets for equivalent parts within the S4006 product line.