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S4040NRP
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Product Detailed Parameters
- Description：SCR 400V 40A TO263
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：TO-263 (D2PAK)
- 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 S4040NRP is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx40x series, designed for surface-mount applications in the SMTO-263-2 package. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 40 A. The device supports a maximum non-repetitive peak on-state current of 520 A with a holding current maximum of 60 mA. Electrical characteristics include a forward voltage drop of 1.8 V, gate trigger voltage of 1.5 V, and gate trigger current of 40 mA. Operating temperature ranges from -40°C to +125°C.
Feature Summary
- Surface-mount construction in an isolated SMTO-263-2 package for automated PCB assembly
- High surge capability with 520 A non-repetitive peak on-state current rating
- Low gate sensitivity requiring 40 mA trigger current for reliable switching
Applications
- AC power control circuits
- Lighting dimmer systems
- Motor speed control applications
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number S4040NRP with official Littelfuse documentation. Confirm the specific suffix 'R' indicates reel packaging as documented. Ensure compliance with RoHS and REACH standards required for the target deployment region before finalizing procurement orders.
Selection Notes
Select this SCR when a 400 V blocking voltage and 40 A continuous current capacity are required in a surface-mount form factor. The SMTO-263-2 package provides thermal isolation. Verify that the 40 mA gate trigger current matches the driving circuit capabilities and that the 125°C maximum junction temperature suits the thermal management design.
Part Context
The S4040NRP belongs to the Littelfuse Teccor Sxx40x family of thyristors. This series includes variants with different voltage ratings, such as the S8040NRP which offers 800 V blocking capability. The NRP designation specifically identifies the 400 V version packaged in reels or cut tape for high-volume surface-mount manufacturing processes.
Replacement Considerations
The S4040RQ3 is a comparable 400 V, 40 A SCR but utilizes a through-hole TO-220-3 package rather than surface mount. Direct replacement requires evaluating PCB layout changes and mounting constraints due to the package difference.
