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S4X8TSRP
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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)：200 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 S4X8TSRP is a silicon-controlled rectifier (SCR) from the SxX8xS series, packaged in an SOT-223-3 surface-mount configuration. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 800 mA. Key electrical parameters include a gate trigger voltage of 800 mV, a gate trigger current of 200 uA, and a maximum holding current of 5 mA. The device operates within a temperature range of -40 C to +125 C, with a forward voltage of 1.7 V and a non-repetitive peak on-state current of 10 A.
Feature Summary
- Sensitive gate triggering for low-power control applications
- Surface-mount design for automated assembly processes
- High thermal stability across extended industrial temperature ranges
Applications
- General purpose switching circuits
- Power control modules
- Industrial automation systems
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and variant selection. Confirm RoHS compliance status through the latest environmental documentation provided by Littelfuse. Cross-reference the Mouser part number 576-S4X8TSRP with the original component marking to prevent substitution errors during procurement.
Selection Notes
Select this component when a compact SCR with sensitive gate drive requirements is needed for surface-mount designs. Ensure the circuit can handle the 400 V blocking voltage and 800 mA continuous current rating. Verify that the PCB layout supports the SOT-223-3 package thermal dissipation needs for the intended operating environment.
Part Context
This SCR belongs to the SxX8xS family of thyristors manufactured by Littelfuse. The series is designed for general-purpose power control applications requiring reliable switching performance in a small form factor. The S4X8TSRP specifically denotes the 400 V voltage class and 800 mA current rating within this product line.
Replacement Considerations
Consult Littelfuse official cross-reference guides for verified substitutes. Ensure any replacement matches the SOT-223-3 package, 400 V rating, and sensitive gate characteristics.
