Q8012LH2

Triacs Overview

The Littelfuse Q8012LH2 is a triac designed for alternating current control applications. It features an 800V repetitive peak off-state voltage and a 12A RMS on-state current rating. The device utilizes a sensitive gate configuration with a maximum DC gate trigger current of 10 mA and a maximum DC gate trigger voltage of 1.3 V. It operates within a temperature range of -40°C to +125°C and is housed in an isolated TO-220AB plastic flange mount package. Key electrical characteristics include a minimum critical rate of rise of off-state voltage (dv/dt) of 150 V/us and a minimum critical rate of rise of on-state current (di/dt) of 2 V/us.

Triacs Feature Summary

• Sensitive gate triggering capability for low-power drive circuits
• High thermal stability suitable for demanding industrial environments
• Robust insulation isolation provided by the TO-220AB package

Triacs Applications

• AC motor speed control systems
• Solid-state relay switching modules
• Industrial heating element regulation

Triacs Procurement Notes

Verify the specific datasheet revision when sourcing, as Littelfuse may update mechanical drawings or testing standards over time. Confirm that the TO-220AB package variant matches your PCB footprint requirements. Ensure the supplier provides documentation confirming RoHS compliance status for the specific batch delivered.

Triacs Selection Notes

Select this component when an 800V blocking voltage is required alongside a 12A continuous load capacity. The 10 mA gate sensitivity allows compatibility with standard logic-level drivers without additional amplification. Consider the thermal resistance of the TO-220AB case for heatsinking calculations if operating near the 12A limit.

Triacs Part Context

This part belongs to the Littelfuse triac family, which includes various voltage and current ratings for power switching. The Q8012 series specifically targets medium-power AC control needs. It serves as a discrete semiconductor solution for replacing electromechanical relays in high-cycle applications.

Triacs Replacement Considerations

Check for direct pin-compatible replacements from other manufacturers offering equivalent 800V/12A triacs with similar gate sensitivities. Verify that any substitute maintains the same TO-220AB flange mounting style and thermal performance characteristics.