T1235H-8I

Triacs Overview

The T1235H-8I is a bidirectional triac from the H-Series, rated for 12 A RMS on-state current and 800 V symmetrical blocking voltage. It features a maximum junction temperature of 150 °C and operates within a temperature range of -40 °C to +150 °C. The device utilizes TO-220AB Insulated packaging with an internal ceramic pad providing 2500 V RMS insulation. Key electrical parameters include a 1.5 V on-state voltage, 2 uA leakage current at VDRM, and a non-repetitive peak on-state current of 126 A. Gate triggering requires up to 1.3 V and 35 mA, with a maximum holding current of 35 mA.

Triacs Feature Summary

• Snubberless technology enables robust dynamic turn-off commutation and high static noise immunity without external RC circuits.
• Internal ceramic pad provides recognized voltage insulation rated at 2500 V RMS for enhanced safety.
• Three triggering quadrants support versatile gate control configurations in AC switching applications.

Triacs Applications

• Control of universal motors in home appliances
• Heater load management in industrial control systems
• General purpose mains power AC switching

Triacs Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number T1235H-8I with official STMicroelectronics documentation. Confirm RoHS compliance status and ECOPACK2 grading through the datasheet. Ensure the TO-220AB Insulated package variant matches design requirements for thermal and isolation specifications before procurement.

Triacs Selection Notes

Select this component when designing circuits requiring 800 V blocking capability and 12 A continuous current handling. The insulated TO-220AB package is suitable for applications needing galvanic isolation between the heatsink and circuit ground. Verify that the 150 °C maximum junction temperature aligns with the thermal management strategy for the specific enclosure environment.

Triacs Part Context

This triac belongs to the T1235H series, which includes variants like T1235T-8I (non-insulated) and T1235H-6I (600 V rating). The H-series designation indicates high-temperature operation capabilities up to 150 °C. The '8I' suffix specifies the 800 V voltage grade and insulated package configuration within the product family.

Triacs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult STMicroelectronics for direct replacements or verify compatibility with similar H-series triacs based on electrical ratings and package dimensions.