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Product Detailed Parameters
- Description：TRIAC ALTERNISTOR 400V 4A TO220
- Series：Snubberless™
- Mfr：STMicroelectronics
- Package：Tube
- Triac Type：Alternistor - Snubberless
- Voltage - Off State：400 V
- Current - On State (It (RMS)) (Max)：4:00 AM
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm)：30A, 31A
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：35 mA
- Configuration：Single
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The T435-400T is a high-performance TRIAC from the T4 series, manufactured by STMicroelectronics. It features a 4 A RMS current rating and a repetitive peak off-state voltage of 400 V. The device utilizes sensitive gate technology with a gate trigger current of 10 mA or less. It offers high commutation capability with a critical di/dt greater than 3.5 A/ms. Packaged in TO-220AB, it is designed for AC inductive load switching applications.
Feature Summary
- Sensitive gate design requiring low gate current for triggering
- High commutation performance suitable for inductive loads
- Snubberless operation capability under defined limits
Applications
- Universal motor control
- Electrovalve switching
- Kitchen appliance equipment
- Power tools
- Dishwashers
Procurement Notes
Verify the specific suffix 'T' indicates the TO-220AB package configuration. Confirm the '400' designation corresponds to the 400 V blocking voltage rating. Ensure compatibility with the required thermal management for the non-insulated tab variant. Cross-reference official ST documentation for exact marking codes and mechanical dimensions.
Selection Notes
Select this component for AC switching applications requiring 4 A continuous current and 400 V blocking voltage. The sensitive gate characteristic simplifies driver circuit design. Verify that the application's dv/dt and di/dt stresses remain within the specified limits to ensure snubberless operation reliability.
Part Context
This part belongs to the T4 series of 4 A TRIACs from STMicroelectronics. The series includes variants with different voltage ratings (600 V to 800 V) and package options such as DPAK, IPAK, and ISOWATT220AB. The T435-400T specifically addresses lower voltage requirements within this high-performance family.
Replacement Considerations
Direct substitutes include other T435 series variants like T435-600B for higher voltage needs. Check equivalent parts from other manufacturers offering 4 A, 400 V TRIACs with sensitive gate characteristics and similar TO-220AB packaging.
