Q6012LH1LED

Triacs Overview

The Littelfuse Q6012LH1LED is a 12 Amp Alternistor triac designed for LED dimmer applications. It features a 600 V rated repetitive off-state voltage and a maximum holding current of 8 mA, ensuring reliable performance with low load currents typical in LED lighting. The device operates within a junction temperature range of -40°C to +110°C and utilizes a TO-220AB isolated package (L-Package) for ease of heat sinking. Key electrical characteristics include a gate trigger current of 10 mA maximum, a peak non-repetitive surge current of 110 A at 50 Hz, and a critical rate of rise of on-state current of 70 A/µs.

Triacs Feature Summary

• Optimized for low load current characteristics typical in LED lighting applications
• Provides full control of light output at the extreme low end of load conditions
• Features an internally constructed isolated package for highest isolation voltage
• Improves margin of safe operation with less heat sinking required

Triacs Applications

• AC solid-state switches
• Lighting controls with LED lamp loads
• Small low current motor in power tools
• Lower current motor in home/brown goods appliances

Triacs Procurement Notes

Verify the specific suffix 'TP' indicates tube packaging when ordering. Confirm that the L-package variant provides the UL recognized 2500Vrms isolation between the mounting tab and active terminals. Ensure the design accounts for the 110°C rated junction temperature limit during thermal management planning.

Triacs Selection Notes

Select this component for AC switching and phase control applications requiring high commutation capabilities. The 8 mA maximum holding current makes it suitable for LED loads where standard triacs may fail to latch. Consider the TO-220L package for its isolated mounting tab, which simplifies heat sinking while maintaining high isolation voltage requirements.

Triacs Part Context

This part belongs to the Q6012xH1LED series, which includes variants like Q6012RH1LED and Q6012NH1LED. These devices are classified as Alternistors, a type of high commutation triac. The series is specifically engineered to address the challenges of controlling LED lighting, such as low steady-state currents and high initial turn-on current spikes.

Triacs Replacement Considerations

Q6012RH1LED

Triacs FAQ

What is the maximum holding current for the Q6012LH1LED?

The maximum holding current is 8 mA.

Is the Q6012LH1LED suitable for all operating quadrants?

It is specified for 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)?

The di/dt performance is 70 A/µs.