T835-8G

Overview

The T835-8G is an 8 A Snubberless Triac manufactured by STMicroelectronics, designed for general-purpose AC switching applications. It operates with a repetitive peak off-state voltage (VDRM) of 800 V and supports a maximum junction temperature of 125 °C. The device features an on-state RMS current (IT(RMS)) of 8 A and a non-repetitive peak on-state current of 80 A. Key electrical parameters include a holding current (Ih) maximum of 35 mA, gate trigger voltage (VGT) of 1.2 V, and gate trigger current (IGT) of 35 mA. The on-state voltage is specified at 1.55 V, with a leakage current of 5 uA under VDRM conditions. It is housed in a D2PAK-3 surface-mount package.

Feature Summary

• Snubberless design allows operation without external RC snubber circuits when defined limits are respected.
• High static dV/dt provides immunity to false turn-on events.
• High dynamic turn-off commutation capability ensures reliable performance.
• Three-quadrant triggering simplifies gate drive circuitry.

Applications

• General purpose AC switching
• Static relays
• Heating regulation systems

Procurement Notes

Verify the specific datasheet revision and ordering information directly from STMicroelectronics or authorized distributors. Confirm that the D2PAK-3 package variant matches the required PCB footprint and thermal management strategy. Ensure compliance with RoHS and Halogen-Free standards as indicated in the product specifications before finalizing procurement orders.

Selection Notes

Select the T835-8G for applications requiring high commutation capability and noise immunity in compact designs. The 800 V rating suits standard AC line voltages. Consider the 125 °C junction temperature limit when designing thermal solutions. Verify that the gate trigger requirements align with the driving logic levels to ensure reliable switching without excessive gate power dissipation.

Part Context

The T835-8G belongs to the T835 series of Snubberless Triacs from STMicroelectronics. This series includes variants in different packages such as DPAK and D2PAK. The T835 series is engineered for robust performance in AC load control, offering improved thermal margins and simplified circuit designs compared to traditional triacs requiring external snubbers.

Replacement Considerations

Direct replacements within the same family include other T835 series variants with compatible electrical ratings. Check package compatibility if substituting with through-hole versions like T835T-8I. Ensure the replacement part maintains the 800 V blocking voltage and 8 A current handling capabilities for equivalent performance.

FAQ

Can the T835-8G operate without a snubber circuit?

Yes, the T835-8G is a Snubberless Triac designed to operate without an external RC snubber circuit, provided the operating limits defined in the datasheet are respected.

What is the maximum junction temperature for the T835-8G?

The maximum junction temperature (Tj) for the T835-8G is 125 °C.

What package type does the T835-8G use?

The T835-8G is available in the D2PAK-3 surface-mount package.