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SK040NRP
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Product Detailed Parameters
- Description：SCR 1KV 40A TO263
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Voltage - Off State：1 kV
- 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
- Grade：-
- Qualification：-
- 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)：30 µA
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Overview
The Littelfuse SK040NRP is a Silicon Controlled Rectifier (SCR) from the SK series, designed for high-power switching applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capacity of 40 A. The device utilizes a TO-220AB package with two terminals, facilitating through-hole mounting. Key electrical characteristics include a maximum non-repetitive peak on-state current of 520 A, a holding current of 60 mA, and a gate trigger voltage of 1.5 V. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- High current handling capability suitable for industrial power control
- Robust thermal performance in standard TO-220AB packaging
- Standardized gate triggering parameters for easy circuit integration
Applications
- Industrial motor speed control systems
- AC power regulation circuits
- Lighting dimmer applications
Procurement Notes
Verify the specific suffix 'NRP' against the official Littelfuse datasheet to confirm exact packaging and tape-and-reel specifications. Ensure the component matches the required voltage and current ratings for the target application. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and availability status before procurement.
Selection Notes
Select this SCR when a 400 V blocking voltage and 40 A continuous current are required in a TO-220 package. Compare gate trigger requirements with the driving circuit capabilities. Consider thermal management needs given the 40 A RMS rating. Verify that the non-repetitive surge current capability meets the system's fault conditions.
Part Context
The SK040NRP belongs to the Littelfuse Teccor SK series of SCRs. This series is widely used in general-purpose power control applications. The device shares common electrical characteristics with other variants in the SK family, differing primarily in voltage ratings and packaging options. It is a standard thyristor component for AC switching tasks.
Replacement Considerations
Direct replacements may include other 40A 400V SCRs in TO-220 packages from manufacturers such as STMicroelectronics or Vishay. Verify pinout compatibility and thermal resistance values. Ensure the replacement device meets or exceeds the original gate trigger current and voltage specifications.
