Q6012LH5TP

Triacs Overview

The Littelfuse Q6012LH5TP is a 12 Amp Alternistor triac designed for AC switching and phase control applications. It features a rated repetitive off-state voltage (VDRM) of 600 V and an RMS on-state current (IT(RMS)) of 12 A at a case temperature of 90°C. The device operates in Quadrants I, II, and III with a maximum gate trigger current (IGT) of 50 mA and a gate trigger voltage (VGT) of 1.3 V. It provides a minimum dv/dt rating of 650 V/µs at 600 V and 125°C. The component utilizes glass-passivated junctions and is housed in an isolated TO-220L package with a thermal resistance from junction to case of 2.3 °C/W.

Triacs Feature Summary

• Alternistor technology enables high commutation performance for extremely inductive loads without requiring snubber circuits.
• Isolated mounting tab design provides enhanced isolation voltage ratings for ease of heat sinking.
• Solid-state switching eliminates arcing and contact bounce associated with mechanical relays.

Triacs Applications

• AC solid-state switches
• Lighting controls and light dimmers
• Motor speed and temperature modulation controls

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm the exact voltage rating and sensitivity class. Confirm that the L-package designation corresponds to the required isolated mounting tab configuration for your thermal and electrical isolation needs.

Triacs Selection Notes

Select this component when high commutation capability is required for inductive loads. Ensure the circuit design limits continuous current to 75% of the rated value and accounts for the thermal resistance of the isolated package during steady-state operation.

Triacs Part Context

This part belongs to the Qxx12xHx series of 12 Amp Alternistor Triacs. The 'L' suffix indicates a TO-220 package with an electrically isolated mounting tab, distinguishing it from non-isolated variants within the same current and voltage family.

Triacs Replacement Considerations

Q6012RH5TP

Triacs FAQ

In which operating quadrants does the Q6012LH5TP function?

The Q6012LH5TP operates in Quadrants I, II, and III. It will not operate in Quadrant IV.

What is the critical rate of rise of on-state current (di/dt) for this device?

The critical rate of rise of on-state current (di/dt) is specified as 70 A/µs at a junction temperature of 125°C.