SJ4020R2TP

Scrs Overview

The Littelfuse SJ4020R2TP is a silicon-controlled rectifier (SCR) from the SJxx20xx series, designed for through-hole mounting in TO-220-2 packages. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current of 20 A. The device exhibits a forward voltage of 1.6 V, with gate trigger parameters of 1.5 V and 10 mA. Non-repetitive surge current capability reaches 300 A, while holding current is limited to 35 mA maximum. Operating temperatures range from -40°C to +150°C, and leakage current at VDRM is specified at 10 µA.

Scrs Feature Summary

• Qualified under AEC-Q101 standards for automotive reliability requirements
• Sensitive gate architecture enabling direct interfacing with microprocessors
• High thermal stability supporting operation up to 150°C junction temperature

Scrs Applications

• Automotive electronic control systems requiring AEC-Q101 compliance
• General purpose power switching circuits
• Industrial motor controls and solenoid drivers

Scrs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number SJ4020R2TP against official Littelfuse documentation. Confirm that the specific suffix indicates AEC-Q101 qualification status as distinct from non-qualified variants. Ensure procurement channels provide traceable supply chain records to guarantee compliance with automotive grade specifications.

Scrs Selection Notes

Select this component when a 400 V blocking voltage and 20 A continuous current rating are required within a TO-220-2 package. The AEC-Q101 qualification makes it suitable for automotive environments where standard industrial SCRs may not suffice. Evaluate thermal management needs given the 150°C maximum operating limit and ensure gate drive circuits can supply the specified 10 mA trigger current reliably.

Scrs Part Context

This device belongs to the Littelfuse SJxx20xx series of silicon-controlled rectifiers. The SJ4020R2TP variant specifically denotes the 400V/20A configuration with automotive qualification. It shares electrical characteristics with the SJ4020L2TP but differs in qualification standards, serving distinct market segments ranging from general industrial to strict automotive applications.

Scrs Replacement Considerations

The SJ4020L2TP serves as a functional substitute with identical electrical ratings but lacks AEC-Q101 automotive qualification. Verify if the application strictly requires automotive grade certification before substituting.