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SK055MTP
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Product Detailed Parameters
- Description：SCR 1KV 55A TO218
- 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)：550A, 650A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-218-3, TO-218AC
- Supplier Device Package：TO-218 Non-Isolated Tab
- 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)：30 µA
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Overview
The Littelfuse SK055MTP is a silicon-controlled rectifier (SCR) from the Teccor Sxx55x series, designed for high-power switching applications. It features a rated repetitive off-state voltage of 1 kV and an RMS on-state current capability of 55 A. The device operates within a temperature range of -40°C to +125°C and utilizes an SMTO-218 through-hole package. Key electrical parameters include a maximum holding current of 60 mA, a forward voltage drop of 1.8 V at rated current, and a gate trigger voltage of 1.5 V with a required trigger current of 40 mA. Non-repetitive peak surge current capacity is specified at 650 A.
Feature Summary
- High-voltage blocking capability suitable for demanding power control circuits
- Robust thermal performance supporting operation up to 125°C junction temperature
- Through-hole mounting configuration for secure PCB integration
Applications
- Industrial motor speed control systems
- High-power heating element regulation
- AC power switching modules
Procurement Notes
Verify component authenticity by cross-referencing the manufacturer part number SK055MTP with official Littelfuse documentation. Confirm that the received units match the specified SMTO-218 package style and meet the stated electrical tolerances for voltage and current ratings before integration into final assemblies.
Selection Notes
Select this SCR when circuit requirements demand a 1 kV blocking voltage and 55 A continuous current handling in a through-hole format. Ensure the driving circuit can supply at least 40 mA gate current to guarantee reliable triggering under all operating conditions and load types.
Part Context
This component belongs to the Teccor Sxx55x family of silicon-controlled rectifiers manufactured by Littelfuse. The series is engineered for general-purpose power control applications requiring reliable latching behavior and high surge tolerance in industrial environments.
Replacement Considerations
Consult Littelfuse official substitution guides for compatible SCRs with matching voltage and current ratings. Verify pinout compatibility and thermal resistance characteristics before replacing existing components in established designs.
