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SJ4012NTP
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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)：20 mA
- Current - Hold (Ih) (Max)：60 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 SJ4012NTP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, designed for high-power switching applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capability of 12 A. The device utilizes a TO-263AB-3 surface-mount package, facilitating automated assembly and efficient thermal management. Key electrical parameters include a holding current maximum of 75 mA and a non-repetitive peak on-state current of 300 A. It operates within a temperature range of -40°C to +150°C junction temperature.
Feature Summary
- High surge current handling capability for robust circuit protection
- Surface-mount construction for compact PCB integration
- Automotive-grade qualification ensuring reliability in harsh environments
Applications
- Industrial motor control systems
- AC power regulation circuits
- Battery charging equipment
Procurement Notes
Verify the specific suffix NTP against official Littelfuse documentation to confirm packaging details and lead times. Ensure compatibility with existing thermal design constraints due to the TO-263 package profile. Cross-reference the part number with authorized distributors to confirm current availability status and authenticity before procurement.
Selection Notes
Select this component when a 400V blocking voltage and 12A continuous current are required in a surface-mount form factor. Compare the 1.6V forward voltage drop against alternative thyristors to evaluate conduction losses. Consider the 300A surge rating for applications involving high inrush currents or short-circuit conditions.
Part Context
This SCR belongs to the SJxx20xx series from Littelfuse, which focuses on automotive and industrial power control solutions. The series is characterized by high reliability and compliance with stringent automotive standards, making it suitable for demanding power electronics designs requiring durable silicon-controlled rectifiers.
Replacement Considerations
Consult Littelfuse datasheets for direct pin-compatible alternatives within the same voltage and current ratings. Verify that any substitute maintains the TO-263AB-3 package dimensions and AEC-Q101 qualification if automotive usage is intended.
FAQ
What is the maximum junction temperature for the SJ4012NTP?
The maximum operating junction temperature is +150°C.
Is the SJ4012NTP qualified for automotive applications?
Yes, the device holds AEC-Q101 qualification.
What is the gate trigger current requirement?
The gate trigger current (Igt) is specified at 35 mA.
