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SJ4020N2TP
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Product Detailed Parameters
- Description：HIGH TJ 400V 20A SCR TO263
- 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 SJ4020N2TP is a Silicon Controlled Rectifier (SCR) from 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 capability of 20 A. The device exhibits a forward voltage drop of 1.6 V at rated conditions, with a gate trigger voltage of 1.5 V and a gate trigger current of 35 mA. Non-repetitive peak on-state current reaches 300 A, while holding current is maximized at 75 mA. Leakage current under off-state voltage is limited to 10 uA. Operating temperatures range from -40 C to +150 C, and the component holds AEC-Q101 qualification for automotive reliability standards.
Feature Summary
- Automotive-grade reliability certified under AEC-Q101 standards for harsh environment operation
- Surface mount construction in TO-263AB-3 package for efficient PCB integration
- High surge current handling capacity suitable for transient protection scenarios
Applications
- Automotive power control circuits requiring robust thyristor performance
- Industrial AC power switching applications
- General purpose rectification in high-current DC systems
Procurement Notes
Verify the specific suffix 'N2' against official Littelfuse documentation to confirm pinout configuration and thermal characteristics differ from standard variants. Ensure the selected distributor provides traceable manufacturing data consistent with AEC-Q101 requirements. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement orders.
Selection Notes
Select this component when a 400 V blocking voltage and 20 A continuous current rating are required in a surface mount form factor. Consider the 1.6 V forward voltage drop for thermal management calculations. Verify that the gate trigger specifications align with the driving circuit capabilities. Confirm that the TO-263AB-3 footprint matches the target PCB layout constraints.
Part Context
This SCR belongs to the SJxx20xx family, which offers various voltage ratings within the same current class. The SJ4020N2TP specifically addresses the 400 V segment of this lineup. It shares the physical package dimensions with other members but differs in electrical breakdown thresholds. This family targets applications needing reliable silicon-controlled rectification in compact spaces.
Replacement Considerations
Consult Littelfuse official substitution guides for equivalent SCRs with matching 400 V and 20 A ratings. Verify pin compatibility and thermal resistance values before replacing. Alternative manufacturers may offer similar TO-263 devices, but electrical parameters must be strictly compared.
