SJ4016LTP

Overview

The SJ4016LTP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, designed for high-power switching applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 16 A. The device exhibits a forward voltage drop (Vf) of 1.6 V at conduction. Gate triggering requirements include a maximum gate trigger voltage (Vgt) of 1.5 V and a gate trigger current (Igt) of 30 mA. The component operates within a temperature range of -40°C to +150°C and utilizes a TO-220-2 through-hole package. Key electrical characteristics include a holding current (Ih) of 75 mA and a non-repetitive peak on-state current of 225 A.

Feature Summary

• High thermal stability with a maximum operating junction temperature of +150°C
• Robust surge handling capability with a non-repetitive peak on-state current rating of 225 A
• Low power dissipation characterized by a 1.6 V forward voltage drop during conduction

Applications

• Industrial motor control systems requiring reliable AC power regulation
• Solid-state relays and contactor replacement circuits
• General-purpose AC power switching in industrial equipment

Procurement Notes

Verify the specific Littelfuse datasheet for the SJ4016LTP to confirm detailed mechanical dimensions and thermal resistance values before finalizing the design. Ensure that the procurement specifications align with the required TO-220-2 package style and through-hole mounting constraints. Cross-reference the manufacturer's official documentation to validate compliance with relevant environmental standards such as REACH and SVHC requirements.

Selection Notes

Select this component when a 400 V blocking voltage and 16 A continuous current capacity are required in a standard TO-220-2 package. Consider the 1.5 V gate trigger voltage and 30 mA gate current for driver circuit compatibility. Evaluate the thermal management needs based on the 150°C maximum operating temperature and the specific heat dissipation requirements of the intended application environment.

Part Context

This part belongs to the Littelfuse SJxx16xx series of thyristors, which are engineered for robust performance in power control applications. The SJ4016LTP specifically addresses scenarios demanding high current handling and reliable switching in a compact through-hole form factor. It serves as a fundamental building block for AC power regulation and protection circuits within the broader Littelfuse power semiconductor portfolio.

Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Generic replacements must match the 400 V VDRM, 16 A It RMS, and TO-220-2 package constraints.