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SK040RTP
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Product Detailed Parameters
- Description：SCR 1KV 40A TO220AB-R
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- 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-220AB-R
- 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 SK040RTP is a silicon-controlled rectifier (SCR) belonging to the SK series, designed for power control applications. It features a maximum repetitive peak off-state voltage of 1000 V and an on-state current rating of 40 A. The device utilizes a TO-220-2 package for mounting. Key electrical characteristics include a holding current of 50 mA and a gate trigger current of 100 mA. In the off-state, it exhibits a leakage current of 30 uA under specified conditions. The component operates within a junction temperature range of -40°C to +125°C and supports a non-repetitive peak on-state current of 400 A.
Feature Summary
- High voltage blocking capability suitable for demanding power circuits
- Robust thermal management through standard TO-220-2 leaded packaging
- Defined gate triggering parameters for reliable switching control
Applications
- Industrial motor speed control systems
- AC power regulation circuits
- Solid-state relay inputs
Procurement Notes
Verify the specific Littelfuse datasheet for the SK040RTP to confirm exact electrical limits and mechanical dimensions before integration. Ensure the ordering suffix matches the required tape and reel or tube configuration if applicable. Cross-reference the manufacturer's part number with authorized distributor listings to confirm authenticity and current availability status.
Selection Notes
Select this SCR based on the 1000 V voltage rating and 40 A current capacity requirements of the target circuit. Consider the TO-220-2 package for adequate heat dissipation without additional complex cooling structures. Evaluate the gate trigger specifications against the driving circuit's output capabilities to ensure proper turn-on reliability under all operating conditions.
Part Context
The SK040RTP is part of Littelfuse's broader SK series of thyristors, which are engineered for general-purpose power switching. This series provides standardized performance metrics for industrial and commercial applications. The RTP suffix typically denotes specific packaging or handling variations within the manufacturer's product line, distinguishing it from other variants in the same voltage and current class.
Replacement Considerations
Consult official Littelfuse substitution guides for direct equivalents. Verify that any alternative SCR matches the 1000 V rating, 40 A current, and TO-220-2 footprint. Confirm compatibility of gate trigger parameters with existing drive circuitry before replacing the original component.
