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S4X8ESRP
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Product Detailed Parameters
- Description：SCR 400V 800MA TO92
- 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：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92
- 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 S4X8ESRP is a sensitive gate Silicon Controlled Rectifier (SCR) from Littelfuse, rated for 400V repetitive off-state voltage and 800mA RMS on-state current. It features a TO-92 through-hole package with a planar construction design. Key electrical parameters include a maximum gate trigger voltage of 800mV and a gate trigger current of 200uA. The device supports a maximum blocking voltage of 400V, has a forward voltage of 1.7V, and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Sensitive gate architecture enabling low power triggering requirements
- Planar construction design for high static dv/dt performance
- Low turn-off time characteristics for efficient switching applications
Applications
- Solid-state relays
- Industrial power tools
- High-power motor control systems
Procurement Notes
Verify the specific suffix 'ESRP' against official Littelfuse documentation to confirm pinout configuration and thermal characteristics. Ensure the selected component matches the required TO-92 package dimensions and lead form. Cross-reference the datasheet revision date to validate parameter stability before integration into final designs.
Selection Notes
Select this component when low gate sensitivity is critical for driving circuits with limited current capability. The 400V rating suits medium-voltage AC control applications. Consider the TO-92 package constraints for thermal dissipation in high-duty cycle scenarios compared to larger packages.
Part Context
This part belongs to the Sxx8x series of sensitive SCRs designed for general-purpose thyristor applications. The series emphasizes compact size and reliable switching performance. It complements other Littelfuse thyristor families by offering a balance of voltage rating and current capacity in standard through-hole packaging.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit layouts if considering alternative manufacturers or higher-rated variants within the same family.
