T435-600B-TR

Overview

The T435-600B-TR is a Snubberless™ TRIAC from STMicroelectronics, rated for 600 V repetitive peak off-state voltage and 4 A RMS on-state current. It utilizes logic level technology to enable direct drive from microcontrollers with a maximum gate trigger current of 35 mA and voltage of 1.3 V. The device supports non-repetitive surge currents of 30 A at 50 Hz and operates within a junction temperature range of -40°C to +125°C. Packaged in a DPAK (TO-252) surface-mount housing, it is designed for AC inductive load switching without external snubber circuits.

Feature Summary

• Snubberless operation eliminates the need for external RC networks, reducing component count and board space.
• Logic level gate sensitivity allows direct interfacing with standard microcontroller output ports.
• High commutation performance ensures reliable switching of AC inductive loads.

Applications

• Universal motor speed control
• Electrovalve actuation
• Kitchen appliance equipment
• Power tools

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS3 compliance requirements for your assembly process. Cross-reference the full part number with authorized distributor catalogs to validate availability and authenticity before finalizing procurement plans.

Selection Notes

Select this component when designing AC switching circuits for inductive loads requiring high commutation capability. The 600V rating suits single-phase mains applications. Verify that the 4A RMS current capacity aligns with the load requirements. Consider the DPAK package thermal characteristics for heat dissipation needs in the target enclosure design.

Part Context

This part belongs to the T4 Series of 4A TRIACs from STMicroelectronics. The series is characterized by Snubberless and Logic Level technologies. Other variants in the family include different voltage ratings such as 700V and 800V, and alternative packages like IPAK or TO-220AB, offering flexibility for various power and insulation requirements.

Replacement Considerations

T435-700B-TR offers identical electrical characteristics except for an increased 700V blocking voltage rating. Both devices share the same DPAK package and 4A current handling capabilities, allowing for potential substitution if higher voltage margin is required.

FAQ

Does the T435-600B-TR require an external snubber circuit?

No, the device is based on Snubberless technology and is designed to operate without external snubber networks for most AC inductive load applications.

What is the maximum gate trigger current for this TRIAC?

The maximum gate trigger current (Igt) is specified as 35 mA, enabling direct drive from logic-level microcontrollers.