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S4070WTP
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Product Detailed Parameters
- Description：SCR 400V 70A TO218X
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：2 V
- Current - Gate Trigger (Igt) (Max)：50 mA
- Current - Hold (Ih) (Max)：80 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：800A, 950A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-218X-3
- Supplier Device Package：TO-218X
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：45 A
- Current - On State (It (RMS)) (Max)：70 A
- Current - Off State (Max)：20 µA
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Overview
The S4070WTP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc., designed for phase control applications. It features a rated repetitive off-state voltage of 400 V and an on-state RMS current of 70 A. The device has a maximum non-repetitive breakover current of 950 A and an on-state forward voltage of 1.8 V. Gate trigger specifications include a maximum voltage of 2 V and a maximum current of 50 mA. Off-state leakage current at rated voltage is limited to 20 uA, with a maximum holding current of 80 mA. Operating temperature ranges from -40 C to +125 C, housed in a TO-218X through-hole package.
Feature Summary
- Standard recovery thyristor optimized for phase control circuits
- High surge current capability for robust switching performance
- Through-hole mounting configuration for secure mechanical installation
Applications
- Heating control systems
- Motor speed controls
- Phase control applications
Procurement Notes
Verify the specific ordering suffix to confirm the exact packaging configuration, as variations such as tape-and-reel formats may exist within the product family. Ensure that the selected variant matches the required handling and storage conditions for active semiconductor components. Cross-reference the manufacturer's official documentation to validate the part status and availability before finalizing procurement plans.
Selection Notes
Select this component when a 400 V blocking voltage and 70 A continuous current rating are required for AC power regulation. The TO-218X package facilitates efficient heat dissipation for high-current phase control tasks. Consider the gate trigger characteristics and thermal management requirements to ensure compatibility with the driving circuitry and system operating environment.
Part Context
This device belongs to the Low Power SCR series from Littelfuse, which includes unidirectional switches rated up to 1200 V. These standard phase control SCRs are engineered for reliable operation in discrete semiconductor products. The series provides versatile solutions for controlling power flow in various industrial and consumer electronic applications requiring precise voltage or current regulation.
Replacement Considerations
Consult official substitution guides for compatible alternatives with matching voltage and current ratings. Verify pinout compatibility and thermal characteristics when replacing existing components in established designs.
