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SK020LTP
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Product Detailed Parameters
- Description：SCR 1KV 20A ITO220AB
- Series：Teccor®
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：1 kV
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：30 mA
- Current - Hold (Ih) (Max)：40 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：255A, 300A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack, Isolated Tab
- Supplier Device Package：ITO-220AB
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：12.8 A
- Current - On State (It (RMS)) (Max)：20 A
- Current - Off State (Max)：20 µA
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Overview
The Littelfuse SK020LTP is a standard phase control Silicon Controlled Rectifier (SCR) rated for 1 kV off-state voltage and 20 A on-state current. It operates within a junction temperature range of -40°C to 125°C. Key electrical characteristics include a maximum gate trigger voltage of 1.5 V, an off-state leakage current of 20 uA at VDRM IDRM, and a holding current maximum of 150 mA. The device features a critical rate of rise of on-state current (di/dt) of 150 A/μs at 60 Hz and 125°C, with an I²t value of 510 A²s for fusing at tp = 8.3 ms.
Feature Summary
- Designed as an excellent unidirectional switch for phase control applications
- Standard triggering capability suitable for heating and motor speed controls
Applications
- Phase control in heating systems
- Motor speed control circuits
Procurement Notes
Verify the specific package variant upon ordering, as sources indicate discrepancies between TO-220-2 and ITO-220AB designations. Confirm that the selected component matches the required 1 kV blocking voltage and 20 A current rating for the intended circuit. Ensure compatibility with standard phase control triggering requirements before integration.
Selection Notes
Select this SCR for applications requiring robust phase control switching with high surge current handling capabilities. The 150 A/μs di/dt rating supports rapid turn-on scenarios common in AC power regulation. Consider the through-hole mounting type and thermal management needs given the 125°C maximum junction temperature limit for reliable long-term operation.
Part Context
The SK020LTP belongs to the Teccor® series of low power SCRs from Littelfuse, designed for general-purpose phase control. It serves as a standard thyristor solution for industrial and consumer electronics where reliable AC power switching is required. The component is part of a broader family of silicon controlled rectifiers optimized for cost-effective and efficient power management.
Replacement Considerations
Cross-reference with other 1 kV, 20 A phase control SCRs in the TO-220 or ITO-220AB packages. Verify equivalent di/dt and I²t ratings to ensure circuit protection compatibility during replacement scenarios.
