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S4X8BS1RP
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Product Detailed Parameters
- Description：SCR 400V 800MA SOT89
- 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 (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89
- 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 S4X8BS1RP is a silicon-controlled rectifier (SCR) manufactured by Littelfuse Inc., designed for surface-mount applications in the SOT-89 package. It features a rated repetitive off-state voltage of 400 V and an on-state current capacity of 800 mA. The device operates within a temperature range of -40°C to +125°C, ensuring reliability in demanding environments. Key electrical parameters include a maximum gate trigger voltage of 800 mV and a holding current of 5 mA. This component is part of the Sx02xS series, offering a compact solution for power control circuits requiring high voltage tolerance and efficient thermal management.
Feature Summary
- Surface-mount design in a compact SOT-89 package for automated assembly
- High voltage blocking capability suitable for sensitive power control applications
- Robust thermal performance with extended operating temperature range
Applications
- Solid-state relays
- Industrial motor control systems
- Power supply regulation circuits
Procurement Notes
Verify the exact ordering suffix against official Littelfuse documentation to ensure correct packaging and variant selection. Confirm RoHS compliance status and REACH SVHC declarations prior to integration. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability. Ensure storage conditions meet moisture sensitivity level requirements before soldering.
Selection Notes
Select this SCR based on its 400 V voltage rating and 800 mA current handling capabilities. Evaluate the gate trigger characteristics to match the driving circuit's output limits. Consider the SOT-89 footprint constraints during PCB layout. Verify that the thermal dissipation requirements align with the system's heat sink or board copper area specifications.
Part Context
This component belongs to Littelfuse's Sx02xS series of thyristors, which are engineered for general-purpose power switching. The series emphasizes compact form factors and reliable performance in industrial and consumer electronics. The S4X8BS1RP specifically addresses needs for moderate current applications where space efficiency and high voltage isolation are critical design parameters.
Replacement Considerations
Consult official Littelfuse substitution guides for parameter-equivalent alternatives. Verify pinout compatibility and thermal resistance values when considering cross-brand replacements. Ensure any substitute meets the same voltage and current ratings without compromising safety margins.
