Q8025L6

Triacs Overview

The Littelfuse Q8025L6 is a bidirectional triac designed for AC power control applications. It features an RMS on-state current rating of 25 A and a repetitive peak off-state voltage (VDRM) of 800 V. The device operates within a junction temperature range of -40°C to +125°C and is housed in a TO-220-2 package for through-hole mounting. Key electrical characteristics include a maximum holding current of 100 mA, a gate trigger current of 80 mA, and an on-state voltage of 1.8 V. The component exhibits a low off-state leakage current of 10 µA at VDRM.

Triacs Feature Summary

• High thermal stability with a maximum operating temperature of 125°C
• Sensitive gate triggering capability for direct microprocessor interfacing
• Robust construction in a standard TO-220-2 through-hole package

Triacs Applications

• AC motor speed control circuits
• Solid-state relay designs
• Lighting dimmer switches

Triacs Procurement Notes

Verify the specific suffix designation when ordering, as variations such as Q8025L6TP or Q8025N5TP exist within the same family. Confirm package type requirements, as some variants utilize surface-mount SMTO-263-2 packages instead of the through-hole TO-220-2 configuration found in the base model. Ensure compatibility with existing PCB footprints before finalizing procurement specifications.

Triacs Selection Notes

Select this component for applications requiring 25 A continuous current handling at 800 V blocking voltage. The TO-220-2 package facilitates efficient heat dissipation via heatsink mounting. Verify that the gate trigger current of 80 mA aligns with the driving circuit's output capabilities. Consider the 125°C maximum junction temperature limit when designing thermal management solutions for high-duty-cycle operations.

Triacs Part Context

This part belongs to the Littelfuse Qxx25xx series of thyristors. The series provides standardized solutions for general-purpose AC switching. The Q8025L6 specifically denotes the 800 V voltage rating and 25 A current capacity within this lineup. It serves as a discrete alternative to integrated triac modules in cost-sensitive power electronics designs.

Triacs Replacement Considerations

Direct substitutes may include other 800 V, 25 A triacs in TO-220 packages from manufacturers like STMicroelectronics or Vishay. Verify pinout compatibility and gate sensitivity parameters before substitution. Cross-reference datasheets for equivalent thermal resistance and surge current ratings.