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SJ4040L2ATP
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Product Detailed Parameters
- Description：40 AMP STANDARD SCR TO-220 ISO
- Series：SJxx40xxA
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：15 mA
- Current - Hold (Ih) (Max)：50 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：430A, 520A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack, Isolated Tab
- Supplier Device Package：ITO-220AB
- Voltage - On State (Vtm) (Max)：1.7 V
- Current - On State (It (AV)) (Max)：25 A
- Current - On State (It (RMS)) (Max)：40 A
- Current - Off State (Max)：10 µA
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Overview
The SJ4040L2ATP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, belonging to the SJxx20xx series. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 40 A. The device has a maximum holding current (Ih) of 35 mA and a non-repetitive peak on-state current of 300 A. Gate triggering parameters include a maximum gate trigger voltage (Vgt) of 1.5 V and a maximum gate trigger current (Igt) of 10 mA. The forward voltage drop (Vf) is 1.6 V at rated conditions. It operates within a temperature range of -40 °C to +150 °C and is housed in a TO-220-2 package for through-hole mounting.
Feature Summary
- High current handling capability with 40 A RMS rating in a standard TO-220-2 package
- Automotive-grade reliability certified under AEC-Q101 standards
- Robust thermal performance supporting operation up to 150 °C junction temperature
Applications
- Industrial motor control systems requiring high-current switching
- AC power regulation circuits in heavy machinery
- Battery charging equipment for electric vehicles
Procurement Notes
Verify the specific suffix 'L2ATP' against official Littelfuse documentation to confirm pinout orientation and packaging details. Ensure that the procurement channel provides traceability certificates required for automotive or industrial applications. Confirm lead times as production schedules may vary based on demand fluctuations.
Selection Notes
Select this component when a 400 V, 40 A SCR is required for through-hole assembly. Compare the 1.6 V forward voltage drop against alternative devices to evaluate conduction losses. Verify that the 10 mA gate trigger current aligns with the driving circuit's output capabilities to ensure reliable turn-on.
Part Context
This part belongs to the SJxx20xx series of thyristors from Littelfuse. The series is designed for general purpose and industrial applications. The SJ4040L2ATP specifically offers higher current capacity compared to lower-rated variants in the same family while maintaining similar voltage ratings and package dimensions.
Replacement Considerations
Check for direct cross-reference parts with identical 400 V / 40 A specifications. Verify pin compatibility for TO-220-2 packages before substitution. Ensure replacement devices meet AEC-Q101 requirements if used in automotive contexts.
