SJ6040L2ATP

Overview

The Littelfuse SJ6040L2ATP is a Silicon Controlled Rectifier (SCR) belonging to the SJxx40x series, designed for high-temperature operation up to a junction temperature of 150°C. It features a rated repetitive off-state voltage of 600 V and an on-state RMS current of 40 A. The device utilizes a TO-220AB package with three leads for through-hole mounting. Key electrical characteristics include a maximum gate trigger voltage of 1.5 V and a gate trigger current of 15 mA. It exhibits a maximum on-state voltage of 1.7 V and a non-repetitive peak surge current capability of 430 A at 50 Hz or 520 A at 60 Hz.

Feature Summary

• Capable of handling high load currents and occasional overloads in environments with limited cooling capacity due to a 150°C junction temperature rating.
• Offers flexible installation options through the standard TO-220AB non-isolated package format.
• Features a high critical rate of rise of off-state voltage (dv/dt) to withstand line noise and surges common in commercial AC power sources.

Applications

• Rectifiers for various end-use equipment
• AC solid state switches
• Industrial electric tools
• White goods and commercial appliances

Procurement Notes

Verify the specific suffix 'L2ATP' against official Littelfuse documentation to confirm exact pinout and thermal specifications, as variations exist within the SJ6040 family. Ensure the component meets RoHS3 compliance requirements if mandated by the target application standards. Cross-reference datasheet parameters such as holding current and leakage current to validate suitability for the specific circuit design constraints.

Selection Notes

Select this component when applications require robust performance under high thermal stress conditions where traditional SCRs might fail. The 40 A RMS rating supports higher load currents compared to lower-rated counterparts. Consider the TO-220AB package for ease of integration with standard heatsinking solutions. Verify that the 600 V blocking voltage aligns with the peak inverse voltage requirements of the AC supply lines involved.

Part Context

This part belongs to the SJxx40x series, representing Littelfuse's first SCR family rated for 600 V, 40 A, and 150°C junction temperature. The series was introduced to address thermal runaway risks in devices with limited cooling capabilities. It serves as a specialized solution for phase control and rectification where reliability under harsh thermal conditions is critical.

Replacement Considerations

Direct substitutes within the same series include SJ6040R2TP, which shares identical electrical ratings but may differ in packaging or minor manufacturing revisions. Verify compatibility before substitution, as suffix changes can indicate differences in lead finish or specific testing criteria defined by the manufacturer.