QV8012DH3TP

Triacs Overview

The Littelfuse QV8012DH3TP is a high-temperature Alternistor TRIAC in the QVxx12xHx series, housed in a TO-252 (DPAK) surface-mount package. It features an on-state RMS current of 12 A and offers voltage ratings of either 600 V or 800 V. The device supports operation in quadrants I, II, and III with a DC gate trigger current of 20 mA. Key electrical parameters include a peak on-state voltage of 1.6 V at 17 A, a non-repetitive surge peak off-state voltage of 960 V, and a critical rate-of-rise of on-state current of 100 A/µs. It operates within a junction temperature range of -40 °C to 150 °C.

Triacs Feature Summary

• High dv/dt capability up to 2000 V/µs for improved noise immunity
• 3Q technology enabling high commutation capability without a snubber circuit
• Mechanically and thermally robust clip-attach assembly
• Internally isolated package options available for better heat sinking

Triacs Applications

• Heater control such as coffee brewers, tankless water heaters, and infrared heaters
• AC solid-state relays
• Light dimmers including incandescent and LED lighting
• Motor speed control in kitchen appliances, power tools, and home goods

Triacs Procurement Notes

Verify the specific voltage rating (600 V or 800 V) required for the application, as the base part number covers both variants. Confirm that the TO-252 package aligns with the PCB footprint design. Ensure the gate trigger current sensitivity of 20 mA matches the driving circuit capabilities. Check for RoHS compliance and halogen-free status if environmental regulations apply to the final product assembly.

Triacs Selection Notes

Select this component for AC power control applications requiring high surge handling and thermal robustness. The 12 A RMS rating suits moderate power loads, while the 153 A surge capability handles inrush currents effectively. Consider the TO-252 package for space-constrained surface-mount designs. Evaluate the 20 mA gate sensitivity against the available drive voltage from the control logic to ensure reliable triggering across the operating temperature range.

Triacs Part Context

This device belongs to the QVxx12xHx series of 12 A high-temperature Alternistor TRIACs manufactured by Littelfuse. The series includes various packages such as TO-220AB, TO-251, TO-252, and TO-263, with different gate sensitivities denoted by suffixes H3, H4, and H5. The QV8012DH3TP specifically utilizes the D-package (TO-252) with 20 mA gate sensitivity.

Triacs Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.