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Product Detailed Parameters
- Description:SCR 400V 800MA COMPAK
- 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):12 µA
- Current - Hold (Ih) (Max):5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm):16A, 20A
- SCR Type:Sensitive Gate
- Operating Temperature:-40°C ~ 110°C
- Mounting Type:Surface Mount
- Package / Case:DO-214AA, SMB (3 Leads), Compak
- Supplier Device Package:Compak
- 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):1 µA
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Overview
The Littelfuse S4S1RP is a sensitive gate Silicon Controlled Rectifier (SCR) designed for surface mount applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 800 mA. The device supports a non-repetitive peak on-state current of 20 A with a maximum forward voltage of 1.7 V. Operating within a temperature range of -40°C to 110°C, it utilizes a SOT223-3 package. Leakage current is specified at 1 uA under VDRM conditions.
Feature Summary
- Sensitive gate architecture for reliable triggering
- Surface mount compatibility via SOT223-3 packaging
- High surge current capability for transient protection
Applications
- AC power control circuits
- Solid state relay driver stages
- General purpose switching applications
Procurement Notes
Verify the specific datasheet version from Littelfuse to confirm exact electrical tolerances and thermal characteristics. Ensure the procurement channel provides original manufacturer components to avoid counterfeit devices. Cross-reference the part number with official distributor catalogs to validate availability and lead times prior to finalizing supply chain agreements.
Selection Notes
Select this component when a compact surface mount SCR is required for low-power AC switching. The 400 V rating suits general household and industrial line voltages. Consider the 800 mA RMS limit for load current requirements. The sensitive gate feature simplifies drive circuit design compared to standard gates.
Part Context
This component belongs to the Littelfuse Sx02xS series of thyristors. It is part of a family of surface mount SCRs designed for space-constrained PCB layouts. The series offers various voltage ratings while maintaining consistent package dimensions for design flexibility across different product lines.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Consult Littelfuse technical support or authorized distributors for verified cross-reference data before substituting this component in existing designs.
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