Q4016LH6

Triacs Overview

The Littelfuse Q4016LH6 is an Alternistor Triac designed for high-reliability AC power control applications. It features a 400V repetitive peak off-state voltage and a 16A RMS on-state current rating. The device utilizes a TO-220AB isolated package to provide electrical isolation between the terminal and the mounting base. Key electrical characteristics include a maximum gate trigger voltage of 80mA and a holding current of 80mA. The component operates within a junction temperature range of -40°C to +125°C, ensuring stable performance in demanding industrial environments.

Triacs Feature Summary

• Alternistor technology provides enhanced robustness against dV/dt transients and improved thermal stability compared to standard triacs.
• Integrated isolation barrier in the TO-220AB package allows direct mounting to heat sinks without additional insulating hardware.
• High surge current capability supports reliable operation during inrush conditions in resistive and inductive loads.

Triacs Applications

• Solid-state relays requiring high isolation and switching reliability
• Industrial motor speed control circuits
• AC power regulation systems for heating elements

Triacs Procurement Notes

Verify the specific suffix designation when ordering, as Littelfuse offers variants such as TP, V, and 56 which may indicate different isolation ratings or packaging configurations. Confirm RoHS compliance status through official datasheets prior to integration. Ensure the selected variant matches the required voltage and current specifications for the target application circuit design.

Triacs Selection Notes

Select this component based on its 400V blocking capability and 16A continuous current handling. The Alternistor structure is suitable for applications prone to high dv/dt noise. Consider the thermal resistance of the TO-220AB package and ensure adequate heatsinking to maintain junction temperatures within the specified 125°C limit under full load conditions.

Triacs Part Context

This part belongs to the Qxx16xHx series of Alternistor Triacs from Littelfuse. The series is engineered for general-purpose AC power switching where reliability and transient immunity are critical. It serves as a core semiconductor switch in modern solid-state power control modules.

Triacs Replacement Considerations

Direct substitutes include the Q4016LH6TP and Q4016LH6V. Verify pinout compatibility and isolation voltage ratings before substitution. Cross-reference with Teccor Electronics equivalents if sourcing flexibility is required, ensuring electrical parameters match exactly.