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SJ4025RATP
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Product Detailed Parameters
- Description：HT SCR 400V 25A TO220R AECQ
- Series：SJ
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：75 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：300A, 350A
- 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)：16 A
- Current - On State (It (RMS)) (Max)：25 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse SJ4025RATP is a Silicon Controlled Rectifier (SCR) belonging to the SJxx25xx series, designed for surface mount applications in the TO-263AB-3 package. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 12 A. The device operates within a temperature range of -40°C to +150°C and includes AEC-Q101 qualification. Key electrical parameters include a gate trigger voltage (Vgt) of 1.5 V. This component is manufactured by Littelfuse and is suitable for high-temperature environments requiring robust thyristor switching capabilities.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- High-temperature operation up to +150°C
- Surface mount construction in TO-263AB-3 package
Applications
- Automotive electronic control systems
- Industrial power switching circuits
- AC/DC power conversion modules
Procurement Notes
Verify the exact part number against official Littelfuse documentation, as the specific suffix 'R' may indicate a variant not fully detailed in general listings. Confirm availability through authorized Littelfuse distributors or direct manufacturer channels. Ensure compliance with RoHS and REACH requirements for your region. Check for any recent product change notifications that might affect pinout or specifications before finalizing procurement orders.
Selection Notes
Select this SCR when a 400 V blocking voltage and 12 A RMS current are required in a surface mount form factor. The TO-263AB-3 package offers thermal performance advantages over smaller SMD packages. Consider the 1.5 V gate trigger voltage for compatibility with standard logic-level drivers. Verify that the operating environment stays within the specified -40°C to +150°C range to ensure reliable device performance and longevity.
Part Context
This component is part of Littelfuse's SJxx25xx series of silicon-controlled rectifiers. These devices are engineered for efficient switching in low-current circuits and feature sensitive gates for direct microprocessor interfacing. The series typically offers turnoff times below 55 µs and is available in various configurations including surface mount and axial pass-through options for diverse circuit protection needs.
Replacement Considerations
Direct replacements should match the 400 V VDRM, 12 A It RMS, and TO-263AB-3 package. Verify gate trigger characteristics and thermal resistance values. Consult Littelfuse application notes for cross-reference recommendations ensuring equivalent switching speed and surge current capabilities.
