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S4025RTP
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Product Detailed Parameters
- Description：SCR 400V 25A TO220
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：50 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：300A, 350A
- 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)：1.6 V
- Current - On State (It (AV)) (Max)：16 A
- Current - On State (It (RMS)) (Max)：25 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse S4025RTP is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx25x series, designed for high-current power control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an RMS on-state current (It RMS) of 25 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-220-2 flange mount package. Key electrical parameters include a maximum holding current of 50 mA, a forward voltage drop of 1.6 V, and a non-repetitive peak on-state current of 350 A. Gate triggering requirements are specified at 1.5 V and 35 mA, with a maximum off-state leakage current of 10 µA.
Feature Summary
- High current handling capability with 25 A RMS rating in a compact TO-220-2 package
- Robust thermal performance supporting operation up to +125°C junction temperature
- Low forward voltage drop of 1.6 V for improved conduction efficiency
- Isolated case configuration suitable for direct heatsink mounting
Applications
- AC motor speed control systems
- Solid-state relay circuits
- Industrial power regulation units
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and terminal plating specifications. Confirm RoHS compliance status and UL recognition details directly from the component documentation before finalizing procurement orders.
Selection Notes
Select this component based on its 400 V blocking voltage and 25 A continuous current capacity. Ensure the application circuit provides sufficient gate trigger current of 35 mA. Verify that the thermal management design accommodates the TO-220-2 package's heat dissipation requirements for sustained operation.
Part Context
This SCR belongs to the Littelfuse Teccor Sxx25x family of silicon controlled rectifiers. These devices are engineered for general-purpose power switching tasks requiring reliable latching behavior and high surge tolerance in industrial and commercial electronic equipment.
Replacement Considerations
Consult the official Littelfuse replacement guide for verified cross-reference part numbers. Do not substitute with generic equivalents without verifying matching electrical ratings and pinout configurations.
