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S4035KTP
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Product Detailed Parameters
- Description：SCR 400V 35A TO218
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：40 mA
- Current - Hold (Ih) (Max)：50 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：425A, 500A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-218-3 Isolated Tab, TO-218AC
- Supplier Device Package：TO-218 Isolated Tab
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：22 A
- Current - On State (It (RMS)) (Max)：35 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse S4035KTP is a single-phase Silicon Controlled Rectifier (SCR) designed for high-current switching applications. It features a maximum repetitive peak off-state voltage of 400V and an RMS on-state current rating of 35A, with a maximum average on-state current of 22A. The device requires a maximum DC gate trigger current of 40mA and a gate trigger voltage of 1.5V to activate. It exhibits a critical rate of rise of off-state voltage of 350 V/us and supports a non-repetitive peak on-state current of 500A. Housed in an isolated TO-218AC flange mount package, it operates within a temperature range up to 125°C.
Feature Summary
- Isolated flange mount construction for efficient thermal management and electrical isolation
- High surge current capability suitable for demanding power switching environments
- Low gate drive requirements facilitating direct interface with control circuitry
Applications
- Industrial motor control systems requiring robust phase control
- Solid-state relays for high-power load switching
- General purpose AC power regulation circuits
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pin configuration and packaging details. Ensure the component meets RoHS compliance standards if required by your assembly process. Cross-reference the part number with Littelfuse documentation to validate the exact electrical characteristics and thermal resistance values before procurement.
Selection Notes
Select this component when a 400V blocking voltage and 35A RMS current capacity are required in a standard TO-218 package. Consider the 40mA gate trigger current limit when designing the driving circuit to ensure reliable turn-on. Verify that the thermal design can handle the dissipation associated with a 22A average current rating in the intended operating environment.
Part Context
This SCR belongs to the Littelfuse Teccor series of thyristors, which are widely used in industrial and consumer power control applications. The S4035KTP specifically targets applications needing moderate current handling with high surge tolerance. It complements other devices in the family that offer varying current ratings while maintaining similar voltage capabilities and package styles.
Replacement Considerations
Consult Littelfuse official substitution guides for verified equivalents. Potential replacements may include other 400V, 35A SCRs in TO-218 packages from the same manufacturer or compatible third-party sources, provided electrical parameters match exactly.
