Q4008RH467

Triacs Overview

The Littelfuse Q4008RH467 is a bidirectional triac designed for AC power control applications. It features an RMS on-state current of 8 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device operates within a temperature range of -40 °C to +125 °C and utilizes a TO-220-3 through-hole package. Key electrical parameters include a holding current maximum of 35 mA, gate trigger voltage of 1.3 V, and gate trigger current of 35 mA. Non-repetitive on-state currents are specified at 83 A and 100 A, with an on-state voltage of 1.6 V and leakage current of 10 uA under VDRM conditions.

Triacs Feature Summary

• Bidirectional switching capability for AC circuit control
• High thermal stability operating up to 125 °C
• Robust non-repetitive surge current handling

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging variations. Ensure RoHS compliance status matches project requirements as indicated in datasheet specifications. Confirm package pinout alignment with PCB layout constraints before finalizing procurement orders.

Triacs Selection Notes

Select this component when a 400 V blocking voltage and 8 A continuous current rating are required for AC loads. Verify that the gate trigger characteristics align with the driving circuit capabilities. Consider thermal management solutions suitable for the TO-220-3 package given the 125 °C maximum junction temperature limit.

Triacs Part Context

This part belongs to the Qxx08xHx series of triacs from Littelfuse. These devices are engineered for general-purpose AC power switching. The series offers standardized ratings for industrial and consumer electronics applications requiring reliable thyristor-based control.

Triacs Replacement Considerations

Consult Littelfuse official substitution guides for verified equivalents. Generic replacements must match the 8 A current, 400 V voltage, and TO-220-3 package constraints.