T435-800B-TR

Overview

The T435-800B-TR is a 4 A TRIAC from the STMicroelectronics T4 series, featuring an 800 V repetitive peak reverse voltage. It utilizes Snubberless and Logic Level technology to provide high commutation performance for AC inductive loads. The device operates within a junction temperature range of -40 °C to +125 °C. Key electrical parameters include a maximum gate trigger current (Igt) of 35 mA and a holding current (Ih) of 35 mA. It is packaged in DPAK with a trailing reel configuration.

Feature Summary

• Snubberless operation eliminates the need for external RC snubber circuits under specified limits.
• Logic level sensitivity allows direct drive from microcontrollers or low-power logic gates.
• High static and dynamic commutation capabilities ensure reliable switching of inductive loads.

Applications

• Universal motor control in power tools
• Electrovalve actuation in kitchen appliances
• Dishwasher pump and heating element control

Procurement Notes

Verify the specific suffix 'B' against the manufacturer datasheet to confirm the exact voltage rating and package variant. Ensure the ordering code matches the required DPAK surface-mount configuration. Confirm RoHS compliance status through official documentation before integration into production designs.

Selection Notes

Select this component for applications requiring 4 A RMS current handling at 800 V blocking voltage. The DPAK package is suitable for surface-mount assembly where space constraints exist. Verify that the load's dV/dt and di/dt requirements fall within the Snubberless technology limits to avoid external components.

Part Context

This part belongs to the T4 series of TRIACs designed for general-purpose AC switching. The series emphasizes high commutation performance and noise immunity. The T435-800B-TR specifically denotes the 800 V variant in the DPAK package with tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Check for T435-600B-TR if lower voltage ratings are acceptable. Consider T435-700B-TR for intermediate voltage needs. Verify pinout compatibility with existing PCB layouts when substituting across different voltage grades within the same package family.