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S4055NRP
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Product Detailed Parameters
- Description：SCR 400V 55A 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)：550A, 650A
- 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)：35 A
- Current - On State (It (RMS)) (Max)：55 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse S4055NRP is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx55x series, designed for phase control applications. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 55 A. The device operates within a junction temperature range of -40°C to +125°C and utilizes an SMTO-263-2 surface-mount package. Key electrical parameters include a maximum holding current of 60 mA, a gate trigger voltage of 1.5 V, and a forward voltage drop of 1.8 V at rated current.
Feature Summary
- Standard phase control SCR with low gate trigger requirements
- Surface-mount construction in SMTO-263-2 package
- High surge current capability for robust switching
Applications
- Heating control systems
- Motor speed controls
- Phase control circuits
Procurement Notes
Verify the specific ordering suffix to ensure the correct packaging configuration, such as cut tape or reel, matches the assembly requirements. Confirm RoHS compliance status and check for any recent product change notices that may affect pinout or material composition before finalizing procurement orders.
Selection Notes
Select this component when a 400 V blocking voltage and 55 A continuous current rating are required in a surface-mount form factor. Ensure the application circuit provides sufficient gate drive current above 40 mA to guarantee reliable triggering under all operating conditions and load types.
Part Context
This part belongs to the Littelfuse Teccor Sxx55x series of standard SCRs. The series offers various voltage ratings while maintaining consistent current handling and package dimensions, allowing for design flexibility across different power levels without changing the footprint.
Replacement Considerations
Direct replacements must match the 400 V rating, 55 A current capacity, and SMTO-263-2 package. Verify that alternative devices meet the same gate trigger specifications and thermal characteristics to ensure compatibility with existing PCB layouts and cooling solutions.
