ACTT12X-800CTQ

Overview

The ACTT12X-800CTQ is a planar passivated AC thyristor triac power switch manufactured by WeEn Semiconductors. It is housed in a SOT404 (D2PAK) surface-mountable plastic package and features self-protective clamping capabilities against low and high energy transients. The device supports a maximum junction operating temperature of 150 °C, allowing it to commutate full RMS current without snubber assistance at peak thermal limits. Key electrical parameters include an RMS on-state current of 12 A, a non-repetitive peak on-state current of 99 A, and a rated repetitive off-state voltage of 800 V. The component exhibits a maximum on-state voltage of 1.3 V and a maximum holding current of 55 mA.

Feature Summary

• Integrated self-protective clamping structure for safe high over-voltage withstand capability
• High junction operating temperature capability up to 150 °C
• Snubberless operation with guaranteed immunity to gate noise

Applications

• Applications requiring high junction operating temperature capability
• AC Thyristor Triac power switch circuits
• Systems demanding protection against low and high energy transients

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly from the manufacturer before procurement. Confirm that the SOT404 package dimensions align with your PCB footprint requirements. Ensure the selected variant matches the required thermal management specifications for your intended operating environment.

Selection Notes

Select this component when designs require surface-mount integration with robust transient protection. The 150 °C junction temperature rating makes it suitable for high-thermal environments where standard components may fail. Verify that the 12 A RMS current rating meets the load requirements and that the 800 V blocking voltage provides adequate margin for the circuit's peak voltages.

Part Context

This part belongs to the ACTT series of enhanced and high-temperature AC thyristor power switches. The 'CTN' suffix typically denotes specific packaging or qualification variants within the NXP/WeEn portfolio. This series is designed to replace older discrete solutions by integrating protection features directly into the silicon die.

Replacement Considerations

Check for direct cross-reference part numbers from WeEn Semiconductors or NXP. Verify pinout compatibility and thermal resistance values if substituting with other D2PAK triacs. Ensure any replacement maintains the 150 °C junction temperature rating and snubberless commutation characteristics.