QV8012DH3RP

Triacs Overview

The Littelfuse QV8012DH3RP is a high-temperature Alternistor TRIAC rated for 12 A RMS on-state current and 600 V repetitive off-state voltage. Housed in an internally isolated TO-252 (DPAK) package, it supports a maximum junction temperature of 150 °C and handles a non-repetitive surge peak on-state current of 125 A at 60 Hz. The device features a DC gate trigger current of 20 mA and operates across quadrants I, II, and III. It offers a critical rate-of-rise of off-state voltage (dv/dt) up to 1000 V/µs and includes UL recognition as an electrically isolated semiconductor device.

Triacs Feature Summary

• High dv/dt capability provides improved noise immunity without requiring external snubber circuits.
• Internally isolated mounting tab enables better heat sinking while maintaining high isolation voltage.
• Mechanically and thermally robust clip-attach assembly ensures long-term parameter stability.

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix 'H3' corresponds to the required 20 mA gate sensitivity and 600 V rating during procurement. Confirm that the TO-252 package variant matches the intended PCB footprint and thermal management strategy. Ensure the ordering quantity aligns with the standard reel pack base quantity of 2500 units or cut tape availability to match production requirements accurately.

Triacs Selection Notes

Select this component when applications demand high commutation capability and superior noise immunity in compact surface-mount designs. The 150 °C junction temperature rating allows for efficient thermal management in densely packed enclosures. Designers should ensure the gate drive circuit can supply the specified 20 mA trigger current and that the peak off-state voltage exceeds the system's worst-case transient conditions.

Triacs Part Context

This part belongs to the QVxx12xHx series of 12 A high-temperature Alternistor TRIACs manufactured by Littelfuse. The series encompasses various voltage ratings and package options, including TO-220, TO-251, TO-252, and TO-263. The QV designation indicates high dv/dt performance, while the 'DH3' suffix specifically identifies the TO-252 package with 600 V blocking and 20 mA gate sensitivity.

Triacs Replacement Considerations

Direct replacements within the same family include QV6012DH3RP (600 V, TO-252, 20 mA). For higher voltage requirements, consider QV8012DH3RP if available in the same package. Verify that any substitute maintains the 12 A RMS rating, 150 °C max junction temperature, and internally isolated tab configuration for equivalent thermal and electrical performance.