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SK040NTP
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Product Detailed Parameters
- Description：SCR 1KV 40A TO263
- 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：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 SK040NTP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, belonging to the SK series. It features a 1000V repetitive peak off-state voltage and a 40A average on-state current rating. The device utilizes a TO-220AB package with an isolated case connection for mounting. Key electrical characteristics include a maximum DC gate trigger voltage of 3.5V and a holding current of 60mA. The component supports a non-repetitive peak on-state current of 400A and exhibits a critical rate of rise of off-state voltage of 500V/µs. It operates within a junction temperature range of -40°C to +125°C.
Feature Summary
- High voltage blocking capability suitable for demanding power control applications
- Robust thermal management through an isolated TO-220AB package design
- Defined gate triggering parameters for reliable circuit activation
Applications
- Industrial motor speed control systems
- AC power regulation circuits
- Solid-state relay implementations
Procurement Notes
Verify the specific suffix 'NTP' against the official Littelfuse datasheet to confirm pinout configuration and packaging details. Ensure the selected variant matches the required isolation specifications for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing orders.
Selection Notes
Select this component based on its 1000V voltage rating and 40A current capacity requirements. Consider the TO-220AB package for adequate heat dissipation in high-power scenarios. Evaluate the gate trigger characteristics to ensure compatibility with the driving circuitry. Confirm that the thermal resistance values meet the system's cooling constraints under continuous operation conditions.
Part Context
The SK series represents Littelfuse's line of standard silicon controlled rectors designed for general-purpose power switching. These devices are engineered for reliability in industrial environments. The SK040NTP specifically offers a balance of voltage handling and current carrying capacity, making it a common choice for medium-power AC control applications requiring robust performance.
Replacement Considerations
Consult Littelfuse documentation for direct replacements or cross-references. Verify that any substitute SCR maintains equivalent voltage, current, and package dimensions. Ensure thermal and electrical characteristics match the original design requirements to prevent circuit failure.
