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S4020LTP
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Product Detailed Parameters
- Description：SCR 400V 20A TO220AB-L
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- 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
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Isolated Tab
- Supplier Device Package：TO-220AB-L
- 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)：10 µA
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Overview
The Littelfuse S4020LTP is a silicon-controlled rectifier (SCR) belonging to the SJxx20xx series, designed for high-temperature industrial applications. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current of 20 A. The device operates within a temperature range of -40°C to +150°C and utilizes a TO-220-2 through-hole package. Key electrical characteristics include a forward voltage of 1.6 V, a gate trigger voltage of 1.5 V, and a non-repetitive peak on-state current of 300 A.
Feature Summary
- High-temperature operation capability up to 150°C
- Robust surge handling with 300 A non-repetitive peak current
- Sensitive gate triggering at 1.5 V
Applications
- Industrial motor control systems
- High-power AC power regulation circuits
- Welding equipment power stages
Procurement Notes
Verify the specific suffix 'LTP' against the manufacturer's official datasheet to confirm the exact thermal and mechanical specifications. Ensure the ordering quantity aligns with the manufacturer's standard tube packaging requirements. Cross-reference the part number with authorized distributors to confirm current availability and authenticity before finalizing procurement.
Selection Notes
Select this component when a 400 V blocking voltage and 20 A continuous current are required in a TO-220-2 package. Consider the 1.5 V gate trigger voltage for driver compatibility. Verify that the application environment supports the specified maximum junction temperature of 150°C and that the thermal management design accommodates the 1.6 V forward voltage drop at full load.
Part Context
This SCR belongs to the SJxx20xx family from Littelfuse, which specializes in thyristors for demanding environments. The series is characterized by high-temperature stability and robust surge capabilities, making it suitable for industrial power control applications where reliability under extreme conditions is critical.
Replacement Considerations
The SJ4020NRP offers identical electrical ratings but uses a D2PAK surface-mount package. The SJ4020LTP is the direct through-hole equivalent within the same series.
