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SK040R
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Product Detailed Parameters
- Description：SCR 1KV 40A TO220
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- 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：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)：30 µA
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Overview
The SK040R is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, belonging to the SK series. It features a rated repetitive off-state voltage of 1000 V and an on-state RMS current of 40 A. The device exhibits a maximum off-state leakage current of 30 uA at the rated voltage. It is housed in a TO-220-2 package with a through-hole mounting style. The component operates within a temperature range from -40 C to +125 C. It is RoHS compliant and designed for high-reliability power control applications requiring robust thyristor performance.
Feature Summary
- High voltage blocking capability suitable for demanding power circuits
- Robust thermal management via TO-220-2 through-hole packaging
- Low leakage current ensures stable off-state performance
Applications
- Industrial motor control systems
- AC power regulation circuits
- High-voltage rectification modules
Procurement Notes
Verify the specific suffix against the official Littelfuse datasheet to confirm exact electrical tolerances and pinout configurations. Ensure the procurement channel provides authentic components with traceable documentation. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and compliance with current environmental standards before finalizing orders.
Selection Notes
Select this component when designing circuits requiring 1000 V blocking voltage and 40 A continuous current handling. The TO-220-2 package facilitates efficient heat dissipation for medium-power applications. Consider the gate trigger characteristics and holding current requirements to ensure compatibility with the driving circuitry. Verify that the operating temperature range meets the environmental conditions of the intended installation site.
Part Context
The SK040R belongs to Littelfuse's SK series of silicon controlled rectifiers, which are engineered for general-purpose power control. This series is known for providing reliable switching capabilities in industrial and commercial environments. The component serves as a fundamental building block for managing high currents and voltages in thyristor-based power electronics designs.
Replacement Considerations
Consult Littelfuse official substitution guides for compatible alternatives. Verify that any replacement maintains identical voltage ratings, current capacities, and package dimensions to ensure mechanical and electrical compatibility without redesigning the host circuit board.
