Q4025R5TP

Triacs Overview

The Littelfuse Q4025R5TP is a bidirectional triac designed for AC power control applications. It features a 400 V rated repetitive off-state voltage and conducts an RMS on-state current of 25 A. The device operates within a temperature range of -40 °C to +125 °C. Key electrical parameters include a gate trigger voltage of 2.5 V, a gate trigger current of 50 mA, and a maximum holding current of 100 mA. It exhibits a typical on-state voltage of 1.8 V and a leakage current of 10 µA at the rated voltage. The component is housed in a TO-220-2 package for through-hole mounting.

Triacs Feature Summary

• Bidirectional switching capability for alternating current circuits
• High thermal stability supporting operation up to 125 °C
• Robust surge current handling with non-repetitive ratings up to 200 A

Triacs Applications

• AC motor speed control systems
• Solid-state relay implementations
• General-purpose AC power switching

Triacs Procurement Notes

Verify the specific suffix R5 against the manufacturer datasheet to confirm pinout configuration and exact electrical tolerances. Ensure the ordering part number matches the required package style and compliance standards. Cross-reference the Littelfuse catalog for any recent product change notifications or obsolescence notices before finalizing procurement.

Triacs Selection Notes

Select this component when a 25 A RMS current rating and 400 V blocking voltage are required for through-hole assembly. Compare the 50 mA gate trigger current against available drive circuit capabilities. Evaluate the thermal management requirements given the TO-220-2 package and the specified junction temperature limits for the intended application environment.

Triacs Part Context

This triac belongs to the Qxx25xx series from Littelfuse, which provides standardized high-current thyristor solutions. The Q4025R5TP shares core characteristics with other members of this family but differs in specific gate sensitivity and packaging variants. It serves as a direct replacement for legacy components requiring similar 25 A/400 V specifications in industrial AC control designs.

Triacs Replacement Considerations

The part number alias Q4025R5 indicates potential interchangeability with standard suffix variations. Verify pin compatibility and thermal resistance values when substituting with other 25 A TO-220 triacs from different manufacturers.