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Product Detailed Parameters
- Description:SCR 400V 8A TO251
- 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-251-3 Short Leads, IPAK, TO-251AA
- Supplier Device Package:TO-251 (V-Pak/I-Pak)
- 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 S4008VS2 is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc., designed for unidirectional switching applications. It features a 400 V off-state voltage rating and an 8 A current capacity, housed in a TO-251-3 surface-mount package with short leads, also known as IPak or TO-251AA. The device has a maximum gate trigger voltage of 800 mV. This component serves as an excellent switch for phase control circuits.
Feature Summary
- Unidirectional switching capability for phase control applications
- Surface-mount construction in a compact TO-251-3 package
Applications
- Phase control circuits
- Heating systems
- Motor speed controls
Procurement Notes
Verify the specific manufacturer part number against official Littelfuse documentation to confirm technical specifications. Note that availability status may vary across distributors; some sources indicate discontinuation while others list stock. Ensure the selected component matches the required voltage and current ratings for the intended circuit design before procurement.
Selection Notes
Select this SCR for applications requiring reliable unidirectional switching at moderate voltages and currents. The TO-251-3 package facilitates surface-mount assembly, suitable for space-constrained designs. Consider the 400 V blocking capability and 8 A load handling when designing phase control, heating, or motor speed regulation circuits.
Part Context
This component belongs to the Sxx08x SCR series from Littelfuse, which provides solid-state switching solutions. These devices are engineered for robust performance in power control environments, offering a balance of electrical ratings and physical footprint suitable for modern electronic manufacturing processes.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Littelfuse cross-reference guides for compatible alternatives.
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