T1235H-8T

Triacs Overview

The T1235H-8T is a high-temperature Triac from the ST H-Series, housed in a TO-220AB package. It features a 12 A RMS on-state current and an 800 V symmetrical blocking voltage. The device supports a maximum junction temperature of 150 °C and operates within a temperature range of -40 °C to +150 °C. Key electrical parameters include a holding current maximum of 35 mA, gate trigger voltage of 1.3 V, and gate trigger current of 35 mA. It exhibits a non-repetitive peak on-state current of 126 A and a low off-state leakage current of 2 uA at rated voltage.

Triacs Feature Summary

• Specifically designed for enhanced thermal management in compact drives of heavy AC loads
• Based on ST Snubberless high temperature technology for higher specified turn-off commutation
• Provides robust dynamic turn-off commutation and high noise immunity up to maximum junction temperature

Triacs Applications

• Control of universal motors in industrial settings
• Heater control systems
• Inductive load management in home appliances

Triacs Procurement Notes

Verify the specific suffix '8T' corresponds to the TO-220AB insulated or standard variant as required by the design. Confirm RoHS compliance status via the manufacturer's official documentation before integration. Ensure the procurement channel provides genuine STMicroelectronics components with traceable lot codes to maintain quality standards.

Triacs Selection Notes

Select this component when high-temperature operation up to 150 °C is required alongside 12 A current handling. The TO-220AB package facilitates heatsink mounting for effective thermal dissipation. Consider the Snubberless capability to potentially eliminate external RC snubber circuits, reducing bill of materials cost and board space compared to standard Triacs requiring such protection.

Triacs Part Context

This part belongs to the ST H-Series of high-temperature Triacs. It shares core technological features with other members like the T1235H-8G (D2PAK) and T1235H-8I (Insulated), differing primarily in the physical package type. The series is engineered for applications demanding reliability under extreme thermal conditions and high commutation stress.

Triacs Replacement Considerations

Direct pin-compatible replacements within the same family include T1235H-8G (surface mount D2PAK) and T1235H-8I (insulated TO-220AB). Verify that the alternative package meets the thermal and mechanical constraints of the existing PCB layout and enclosure design.