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S4008LS2
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Product Detailed Parameters
- Description：SCR 400V 8A TO220
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：6 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：83A, 100A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Isolated Tab
- Supplier Device Package：TO-220 Isolated Tab
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：5.1 A
- Current - On State (It (RMS)) (Max)：8:00 AM
- Current - Off State (Max)：5 µA
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Overview
The S4008LS2 is a silicon controlled rectifier (SCR) manufactured by Littelfuse Inc., designed for high-voltage power control applications. It features a 400 V repetitive peak off-state voltage and supports a maximum RMS on-state current of 6 A, with an average on-state current rating of 3.8 A. The device utilizes a sensitive gate architecture, requiring a maximum gate trigger voltage of 800 mV and a gate trigger current of 200 µA to initiate conduction. Housed in a TO-220 package with an isolated tab for thermal management, it operates within a junction temperature range of -40°C to 110°C. Non-repetitive surge currents are rated at 83 A for 50 Hz and 100 A for 60 Hz frequencies.
Feature Summary
- Sensitive gate design enables reliable triggering with low input power requirements.
Applications
- High-voltage AC power switching circuits
- Industrial motor control systems
- Solid-state relay implementations
Procurement Notes
Verify component authenticity through authorized Littelfuse distributors or direct manufacturer channels. Confirm the specific datasheet revision matches the production batch date code. Ensure storage conditions adhere to moisture sensitivity level 1 guidelines to prevent lead oxidation before soldering.
Selection Notes
Select this SCR based on its 400 V blocking capability and 6 A continuous current handling. Verify that the application's peak transient voltages remain below the specified breakdown limits. Consider the TO-220 isolated tab package for effective heat dissipation in enclosed industrial enclosures.
Part Context
This component belongs to the Littelfuse 400 V SCR series, which provides robust solutions for medium-power electronic switching. The S4008LS2 variant specifically offers higher voltage tolerance compared to lower-rated siblings while maintaining similar thermal and mechanical packaging characteristics for board layout compatibility.
Replacement Considerations
Publicly confirmed parameter-equivalent substitutes include the S4008LS2TP from Littelfuse Inc. Verify pinout compatibility and thermal resistance specifications before substituting in existing designs.
