QV8012VH3TP

Triacs Overview

The Littelfuse QV8012VH3TP is a high-temperature Alternistor TRIAC rated for 12 A RMS on-state current and 800 V repetitive peak off-state voltage. Housed in a TO-251 (VPAK) through-hole package, it supports operation in quadrants I, II, and III with a maximum junction temperature of 150 °C. The device features a non-repetitive surge peak on-state current of 125 A at 60 Hz and a critical rate of rise of on-state current of 100 A/µs. It offers a gate trigger current of 20 mA and includes an internally isolated tab configuration to enhance thermal management and isolation voltage.

Triacs Feature Summary

• High dv/dt capability up to 2000 V/µs for improved noise immunity
• Internally isolated TO-251 package for better heat sinking and higher isolation voltage
• 3Q technology enabling high commutation capability without requiring a snubber circuit

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix 'TP' indicates tube packaging when sourcing from distributors. Confirm the TO-251 lead form dimensions match the target PCB footprint. Ensure the 800 V rating aligns with the system's peak off-state voltage requirements. Check for RoHS compliance documentation if required by local regulations.

Triacs Selection Notes

Select this component for AC power control applications requiring high surge handling and robust thermal performance. The TO-251 package suits through-hole designs needing internal isolation. Verify that the 20 mA gate sensitivity meets the driving circuit capabilities. Consider the 150 °C junction temperature limit for high-ambient environments.

Triacs Part Context

This part belongs to the QVxx12xHx series of high-temperature Alternistor TRIACs. The series provides options in various packages including TO-220, TO-251, TO-252, and TO-263. The QV designation indicates high dv/dt characteristics, while the '12' denotes the 12 A current rating. The 'V' specifies the TO-251 package type.

Triacs Replacement Considerations

Consult official Littelfuse cross-reference tools for verified substitutes. Generic TRIAC replacements may not match the specific 3Q quadrant operation or internal isolation features. Verify that any alternative component meets the same 800 V blocking voltage and 12 A RMS current ratings.