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SJ4020N2ATP
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Product Detailed Parameters
- Description：HT SCR 400V 20A TO263 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：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：TO-263 (D2PAK)
- 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 Littelfuse SJ4020N2ATP is a Silicon Controlled Rectifier (SCR) belonging to the SJxx20xx series, designed for surface mount applications in TO-263AB-3 packages. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capacity of 20 A. The device exhibits a maximum holding current of 75 mA and supports non-repetitive peak on-state currents up to 300 A. Electrical characteristics include a forward voltage drop of 1.6 V, with gate trigger requirements of 1.5 V and 35 mA. Operating temperatures range from -40°C to +150°C, and the component holds AEC-Q101 qualification.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- High thermal performance supporting operation up to 150°C
- Surface mount construction in TO-263AB-3 package
Applications
- Automotive power control circuits
- Industrial AC switching applications
- General purpose thyristor protection systems
Procurement Notes
Verify the specific suffix 'N2' against official Littelfuse documentation to confirm exact electrical tolerances and marking codes, as variations within the SJ4020 family may exist. Confirm availability through authorized distributors, noting that standard factory packaging quantities typically apply. Ensure the procurement channel provides valid traceability and authenticity guarantees for AEC-Q101 certified components.
Selection Notes
Select this component when a 400 V blocking capability and 20 A continuous current rating are required in a compact surface mount form factor. The TO-263AB-3 package facilitates efficient heat dissipation for high-power density designs. Verify that the gate trigger parameters align with the driving circuit's output capabilities and ensure the operating environment remains within the specified -40°C to +150°C temperature range.
Part Context
This SCR is part of the broader SJxx20xx series from Littelfuse, which offers various voltage and current ratings within the same package family. Similar parts like the SJ4020NATP share the same physical footprint and core specifications but may differ in specific suffix designations or manufacturing batches. The series targets robust power control solutions requiring reliable semiconductor switching.
Replacement Considerations
Direct substitutes must match the 400 V, 20 A, TO-263AB-3 specification. Cross-reference with other manufacturers offering equivalent thyristors in D2PAK/TO-263 packages. Verify pinout compatibility and thermal resistance values before substitution to ensure circuit integrity.
