Q4008RH3TP

Triacs Overview

The Littelfuse Q4008RH3TP is a Triac component from the Qxx08xx series, designed for AC switching and phase control applications. It features an RMS on-state current (It RMS) of 8 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device exhibits an on-state voltage of 1.6 V and a maximum holding current (Ih) of 50 mA. Gate triggering parameters include a voltage (Vgt) of 2.5 V and currents ranging from 25 mA to 50 mA. It operates within a temperature range of -40°C to +125°C and utilizes a TO-220-2 through-hole package.

Triacs Feature Summary

• Integrated gate control for bidirectional AC switching
• Glass-passivated junctions for parameter stability
• Electrically isolated mounting surface

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls

Triacs Procurement Notes

Verify the specific suffix 'H3' against official Littelfuse documentation to confirm RoHS compliance status and exact pinout configuration. Ensure the TO-220-2 package variant matches the thermal requirements of the target circuit design before finalizing procurement orders.

Triacs Selection Notes

Select this component when an 8 A RMS current rating and 400 V blocking voltage are required in a through-hole format. Consider the 2.5 V gate trigger voltage for compatibility with standard logic drivers. Verify that the 50 mA holding current meets the minimum load requirements of the controlled AC circuit.

Triacs Part Context

This part belongs to the Qxx08xx series of Triacs manufactured by Littelfuse under the Teccor brand. These devices are engineered for robust performance in general-purpose AC power control circuits, offering reliable switching capabilities with standardized packaging for easy integration into industrial and consumer electronics designs.

Triacs Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic replacements must match the 8 A / 400 V / TO-220-2 specifications precisely.