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SJ4012N1TP
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Product Detailed Parameters
- Description：HIGH TJ 400V 12A 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)：6 mA
- Current - Hold (Ih) (Max)：15 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A, 120A
- 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)：7.6 A
- Current - On State (It (RMS)) (Max)：12:00 AM
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse SJ4012N1TP is a Silicon Controlled Rectifier (SCR) thyristor in the SJ series, designed for high-voltage power control applications. It features a rated repetitive off-state voltage of 600 V and an on-state RMS current capability of 12 A. The device operates within a temperature range of -40°C to +150°C and utilizes a TO-263AB-3 surface-mount package. Key electrical parameters include a forward voltage of 1.6 V, gate trigger voltage of 1.5 V, and gate trigger current of 6 mA. It exhibits a maximum holding current of 15 mA and supports a non-repetitive on-state current of 120 A.
Feature Summary
- High-voltage blocking capability suitable for demanding power switching environments
- Surface-mount construction optimized for automated assembly processes
- Robust thermal performance enabling operation at elevated junction temperatures
Applications
- Industrial motor drive systems
- AC/DC power supply circuits
- Solid-state relay implementations
Procurement Notes
Verify component authenticity through authorized Littelfuse distributors or certified partners. Confirm that the received part matches the SJ4012N1TP designation and packaging specifications. Ensure storage conditions comply with manufacturer guidelines to prevent moisture damage prior to soldering. Review the latest datasheet for any updates regarding mechanical dimensions or electrical characteristics before finalizing design integration.
Selection Notes
Select this component when a 600 V rating and 12 A continuous current capacity are required in a compact surface-mount form factor. Consider the specific gate trigger requirements and thermal management needs of the application. Compare against alternative thyristors if higher current ratings or different voltage thresholds are necessary. Evaluate the TO-263 package suitability for the target PCB layout constraints.
Part Context
This SCR belongs to the SJxx20xx family from Littelfuse, characterized by high reliability and robust performance in power electronics. The series is engineered for industrial applications requiring efficient AC power control. The SJ4012N1TP specifically addresses needs for moderate current handling with high voltage isolation in a standardized SMD footprint.
Replacement Considerations
Cross-reference with other 600V 12A SCRs in TO-263 packages from Littelfuse or competitors. Verify pinout compatibility and thermal resistance values. Ensure equivalent gate sensitivity and holding current specifications match the circuit design requirements.
