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Product Detailed Parameters
- Description:SCR 400V 800MA SOT223
- Series:-
- Mfr:Littelfuse Inc.
- Package:Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State:400 V
- Voltage - Gate Trigger (Vgt) (Max):800 mV
- Current - Gate Trigger (Igt) (Max):5 µA
- Current - Hold (Ih) (Max):5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):8A, 10A
- SCR Type:Sensitive Gate
- Operating Temperature:-40°C ~ 125°C
- Mounting Type:Surface Mount
- Package / Case:TO-261-4, TO-261AA
- Supplier Device Package:SOT-223
- Voltage - On State (Vtm) (Max):1.7 V
- Current - On State (It (AV)) (Max):510 mA
- Current - On State (It (RMS)) (Max):800 mA
- Current - Off State (Max):3 µA
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Overview
The Littelfuse S4X8TS1RP is a silicon-controlled rectifier (SCR) from the SxX8xSx series, designed for surface-mount applications in the SOT-223-3 package. It features a rated repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current (It RMS) of 800 mA. Key electrical parameters include a maximum gate trigger voltage (Vgt) of 800 mV, a gate trigger current (Igt) of 200 uA, and a holding current (Ih) maximum of 5 mA. The device operates within a temperature range of -40 C to +125 C, with a forward voltage (Vf) of 1.7 V and a non-repetitive peak on-state current of 10 A.
Feature Summary
- Sensitive gate triggering capability for low-power control circuits
- Surface-mount construction compatible with automated assembly processes
- High thermal stability supporting operation up to 125 C
Applications
- AC power switching modules
- Solid-state relay inputs
- Lighting control systems
Procurement Notes
Verify the specific suffix against official Littelfuse documentation to confirm pinout and electrical tolerances. Ensure the ordering code matches the required sensitivity class and package variant. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.
Selection Notes
Select this component when a compact SCR with sensitive gate drive requirements is needed for 400 V applications. Verify that the 800 mA RMS current rating meets the load demands. Confirm compatibility with SOT-223-3 footprints and ensure the operating temperature range aligns with the system's thermal environment.
Part Context
This device belongs to the SxX8xSx family of thyristors manufactured by Littelfuse. These components are categorized under general-purpose SCRs intended for industrial and consumer electronics. The S4X8TS1RP specifically denotes a 400 V, 800 mA variant within this standardized product line.
Replacement Considerations
Consult Littelfuse datasheets for direct cross-references within the SxX8xSx series. Verify equivalent ratings from other manufacturers only if electrical parameters and package dimensions match exactly.
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