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S4X8ES2AP
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Product Detailed Parameters
- Description：SCR 400V 800MA TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Box (TB)
- 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 S4X8ES2AP is a Silicon Controlled Rectifier (SCR) belonging to the SxX8xSx series. It features a rated repetitive off-state voltage (VDRM) of 600 V and an on-state RMS current (It RMS) of 800 mA. The device has a maximum holding current (Ih) of 5 mA, a forward voltage (Vf) of 1.7 V, and a gate trigger voltage (Vgt) of 800 mV with a gate trigger current (Igt) of 50 uA. It operates within a temperature range of -40 C to +125 C and is housed in a TO-92 package for through-hole mounting.
Feature Summary
- Sensitive gate control requiring low trigger current for reliable activation
- Robust thermal performance suitable for high-temperature environments up to 125 C
- Compact through-hole form factor designed for space-constrained circuit layouts
Applications
- General purpose switching circuits
- Lighting control systems
- Battery charger protection
Procurement Notes
Verify the exact part number against official Littelfuse documentation before procurement. Confirm that the TO-92 through-hole package matches the design requirements. Ensure the 600 V rating and 800 mA current capacity align with the specific application loads. Check for RoHS compliance status as indicated in the manufacturer's specifications.
Selection Notes
Select this component when a sensitive gate SCR is required for moderate power switching applications. The 50 uA gate trigger current allows for easy interfacing with logic-level drivers. The 600 V blocking voltage provides sufficient margin for many AC line applications. Consider the TO-92 package constraints regarding heat dissipation and board space during the design phase.
Part Context
This device is part of the SxX8xSx family of SCRs from Littelfuse. This series offers various voltage and current ratings packaged in standard through-hole formats. The S4X8ES2AP specifically targets applications needing 600 V blocking capability with sensitive gate characteristics in a compact TO-92 case.
Replacement Considerations
Consult Littelfuse datasheets for direct replacements within the SxX8xSx series. Verify pinout compatibility and electrical parameters such as VDRM and It RMS before substituting. Cross-reference with other manufacturers' TO-92 SCRs only if all electrical and mechanical specifications match exactly.
