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Product Detailed Parameters
- Description：TRIAC ALTERNISTOR 700V 4A DPAK
- Series：Snubberless™
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Triac Type：Alternistor - Snubberless
- Voltage - Off State：700 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：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
Download product information
Overview
The T435-700B-TR is a Snubberless™ TRIAC from STMicroelectronics, rated for 4 A RMS current and 700 V repetitive peak off-state voltage. It utilizes logic-level gate technology with a maximum gate trigger current of 35 mA and voltage of 1.3 V. The device supports non-repetitive surge currents up to 31 A and operates within a junction temperature range of -40°C to +125°C. Packaged in a surface-mount DPAK (TO-252) format, it features low holding current and high commutation performance suitable for AC inductive loads.
Feature Summary
- Snubberless™ technology enables direct switching of AC inductive loads without external RC snubber circuits.
- Logic-level gate sensitivity allows direct interfacing with microcontrollers or digital logic outputs.
- High static and dynamic commutation capabilities ensure reliable turn-off under demanding conditions.
Applications
- Universal motor speed control in power tools
- Electrovalve actuation in kitchen appliances
- Dishwasher pump and heating element control
Procurement Notes
Verify the specific suffix 'B' corresponds to the DPAK package and 700V rating when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure ordering quantities align with standard reel sizes if using automated assembly equipment. Cross-reference datasheet revisions to confirm pinout consistency.
Selection Notes
Select this component for applications requiring compact surface-mount solutions for AC load switching. The 4A rating suits moderate power household appliances. Verify that the 700V blocking voltage meets the circuit's peak line voltage requirements. Consider thermal management constraints inherent to the DPAK package for continuous operation.
Part Context
This part belongs to the T4 Series of TRIACs, which are designed based on ST’s Snubberless and Logic Level technologies. The series offers high commutation performance specifically optimized for AC inductive loads. Other variants in the family include different voltage ratings (600V, 800V) and package types such as TO-220 and IPAK.
Replacement Considerations
Direct substitutes may include other ST T435 series variants with matching voltage and current ratings but different packages, such as T435-700T for through-hole applications. Cross-brand replacements require verification of gate trigger characteristics and commutation dI/dt capabilities to ensure compatibility with existing snubberless designs.
