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SJ4020R2ATP
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Product Detailed Parameters
- Description：HT SCR 400V 20A TO220R AECQ
- Series：SJ
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：600 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：10 mA
- Current - Hold (Ih) (Max)：35 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：225A, 300A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220AB
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：12.8 A
- Current - On State (It (RMS)) (Max)：20 A
- Current - Off State (Max)：10 µA
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Overview
The SJ4020R2ATP is a Silicon Controlled Rectifier (SCR) from the SJxx20xx series, manufactured by Littelfuse. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 20 A. The device operates within a temperature range of -40°C to +150°C and is housed in a TO-220-2 through-hole package. Key electrical parameters include a forward voltage (Vf) of 1.6 V, gate trigger voltage (Vgt) of 1.5 V, and gate trigger current (Igt) of 10 mA. It has a maximum holding current (Ih) of 35 mA and an off-state leakage current of 10 uA at VDRM. The component is AEC-Q101 qualified.
Feature Summary
- High-temperature operation capability up to 150°C junction temperature for robust performance in thermally constrained environments.
- AEC-Q101 qualification ensures reliability and suitability for automotive electronic applications.
- Low gate trigger current requirement facilitates efficient control circuit design with minimal drive power.
Applications
- Rectifiers for various end-use equipment
- AC solid state switches
- Industrial electric tools
- White goods and commercial appliances
Procurement Notes
Verify the specific ordering suffix and manufacturer part number against official Littelfuse documentation to ensure exact specification matching. Confirm AEC-Q101 automotive qualification status if required for the target application. Check for any recent Product Change Notifications (PCN) that may affect pinout or material composition before finalizing procurement.
Selection Notes
Select this component when a 400V blocking voltage and 20A continuous current rating are required in a TO-220-2 package. Ensure the thermal management design supports operation up to 150°C junction temperature. Verify that the gate drive circuit can supply at least 10 mA at 1.5 V to guarantee reliable triggering under all operating conditions.
Part Context
This SCR belongs to the SJxx20xx series, which includes variants designed for high-temperature operation. The SJ4020R2ATP specifically offers 400V/20A ratings, distinguishing it from other series members with different voltage or current capabilities. It is part of Littelfuse's broader portfolio of thyristors aimed at industrial and appliance markets.
Replacement Considerations
Consult Littelfuse official substitution guides for compatible alternatives within the SJ series or equivalent products from other manufacturers. Verify that any substitute matches the 400V VDRM, 20A It RMS, and TO-220-2 package dimensions. Ensure the replacement also meets AEC-Q101 requirements if automotive compliance is necessary.
FAQ
What is the maximum junction temperature for the SJ4020R2ATP?
The maximum operating temperature for the SJ4020R2ATP is +150°C.
Is the SJ4020R2ATP qualified for automotive applications?
Yes, the SJ4020R2ATP is AEC-Q101 qualified.
What is the gate trigger current required to turn on the device?
The gate trigger current (Igt) is 10 mA.
