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S4008LS3TP
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Product Detailed Parameters
- Description：SCR 400V 8A ITO220AB
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：500 µA
- Current - Hold (Ih) (Max)：8 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：83A, 100A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack, Isolated Tab
- Supplier Device Package：ITO-220AB
- 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 Littelfuse S4008LS3TP is a silicon-controlled rectifier (SCR) from the Sxx08xSx series, designed for power control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (IT(RMS)) of 8 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-220-2 through-hole package. Key electrical characteristics include a maximum holding current of 50 mA and a gate trigger voltage of 2.5 V. The component exhibits a low off-state leakage current of 5 µA at VDRM and complies with RoHS standards.
Feature Summary
- High-voltage blocking capability suitable for AC power switching
- Robust thermal performance with top-side cooling potential in TO-220-2 package
- Sensitive gate triggering for efficient control circuitry
Applications
- AC motor speed control circuits
- Solid-state relay inputs
- Lighting dimmer applications
Procurement Notes
Verify the specific suffix LS3TP against the official Littelfuse datasheet to confirm pinout and thermal pad configuration. Ensure the procurement channel provides traceable documentation confirming RoHS compliance and REACH SVHC status as listed in the manufacturer specifications. Cross-reference the Mouser part number 576-S4008LS3TP with Littelfuse's official ordering codes to prevent substitution errors.
Selection Notes
Select this SCR when a 400 V rating and 8 A continuous current capacity are required in a standard TO-220-2 footprint. Consider the 50 mA holding current requirement for latch-up maintenance in the load circuit. Evaluate thermal management needs based on the 125°C junction temperature limit and the package's heat dissipation characteristics under expected duty cycles.
Part Context
This component belongs to the Littelfuse Sxx08xSx family of thyristors, which are engineered for general-purpose power switching. The S4008LS3TP variant specifically integrates the 400 V voltage class with the 8 A current rating, offering a standardized solution for industrial and consumer power control modules requiring reliable latching behavior.
Replacement Considerations
Direct replacements must match the 400 V VDRM, 8 A IT(RMS), and TO-220-2 package dimensions. Verify gate trigger characteristics (Vgt/Igt) to ensure compatibility with existing drive circuits. Check for equivalent thermal resistance values if operating near the maximum junction temperature.
