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S4X8ES2RP
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Product Detailed Parameters
- Description：SCR 400V 800MA TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：50 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 Littelfuse S4X8ES2RP is a sensitive gate Silicon Controlled Rectifier (SCR) designed for phase control applications. It features an 800 mA RMS on-state current and a rated repetitive off-state voltage of 400 V. The device operates within a junction temperature range of -40°C to +125°C and utilizes a DO-214AB (SMA) surface-mount package. Key electrical characteristics include a maximum holding current of 5 mA, a forward voltage drop of 1.7 V at rated current, and a non-repetitive peak surge current capability of 20 A. The component requires a gate trigger current of 50 µA and a gate trigger voltage of 800 mV for activation.
Feature Summary
- Sensitive gate architecture enabling reliable triggering with low microampere currents from sense coils or microprocessors.
- Glass-passivated junction construction providing robust protection against voltage transients and environmental stress.
- Surface-mount packaging optimized for automated assembly and compact circuit board layouts.
Applications
- Capacitive discharge systems for strobe lights
- Gas engine ignition circuits
- Power tool motor controls
Procurement Notes
Verify the specific suffix RP indicates the standard reel packaging configuration as documented by the manufacturer. Confirm RoHS compliance status through official Littelfuse documentation prior to integration. Ensure the ordering part number matches the exact voltage and current ratings required for the target application circuit design.
Selection Notes
Select this component when a surface-mount SCR with high sensitivity is required for low-power gate drive scenarios. The 400 V rating suits general-purpose AC phase control where lower voltage blocking is sufficient. Consider the thermal management requirements associated with the SMA package for continuous operation near maximum temperature limits.
Part Context
This device belongs to the SxX8xSx series of sensitive gate SCRs manufactured by Littelfuse. This family is characterized by its ability to be triggered by small signal sources, making it suitable for modern electronic control interfaces that replace mechanical switches in consumer and industrial appliances.
Replacement Considerations
Direct substitutes within the same series include the S6X8ES2RP, which offers a higher 600 V rating but shares similar current and package specifications. Verify pinout compatibility and thermal performance before swapping between different voltage ratings in existing designs.
