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S4040R
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Product Detailed Parameters
- Description：SCR 400V 40A TO220
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：40 mA
- Current - Hold (Ih) (Max)：60 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：430A, 520A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220 Non-Isolated Tab
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：25 A
- Current - On State (It (RMS)) (Max)：40 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse S4040R is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx40x series, designed for high-current power control applications. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current capacity of 40 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-220-3 through-hole package. Key electrical characteristics include a gate trigger voltage of 1.5 V, a gate trigger current of 40 mA, and a maximum holding current of 60 mA. The component exhibits a forward voltage drop of 1.8 V and an off-state leakage current of 10 uA at rated voltage.
Feature Summary
- High current handling capability with 40 A RMS rating for robust power switching
- Thermal resilience supporting operation up to +125°C in demanding environments
- Low gate drive requirements facilitating efficient control circuit integration
Applications
- Industrial motor speed control systems
- Solid-state relay implementations
- AC power regulation circuits
Procurement Notes
Verify the specific suffix against official Littelfuse documentation to confirm exact pinout and thermal specifications. Ensure the selected variant matches the required mounting style and regulatory compliance standards for the target application environment before finalizing procurement.
Selection Notes
Select this component when a 400 V blocking voltage and 40 A continuous current are required in a standard TO-220 package. Consider the 1.5 V gate trigger threshold for driver compatibility. Evaluate thermal management needs given the 125°C maximum junction temperature limit and 40 A RMS dissipation profile.
Part Context
This SCR belongs to the Teccor Sxx40x family, a line of thyristors optimized for general-purpose power control. The S4040R specifically denotes the 40 Ampere, 400 Volt configuration within this series, sharing common design principles with other members regarding gate sensitivity and thermal performance characteristics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult Littelfuse engineering resources or authorized distributors for verified cross-reference data.
