QJ4025JH6TP

Triacs Overview

The Littelfuse QJ4025JH6TP is a high-temperature bidirectional triac designed for robust AC power control applications. It features an RMS on-state current of 25 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device operates within a junction temperature range of -40°C to +150°C, ensuring reliability in demanding thermal environments. Key electrical parameters include a maximum holding current of 100 mA, a gate trigger current of 80 mA, and an on-state voltage of 1.8 V. It utilizes a TO-220AB-3 isolated package for through-hole mounting, providing effective thermal management and electrical isolation.

Triacs Feature Summary

• High-temperature operation capability up to 150°C for enhanced thermal stability
• Electrically isolated construction using the TO-220AB-3 package format
• Robust 25 A RMS current handling with 400 V blocking voltage rating

Triacs Applications

• Industrial motor speed control systems
• Solid-state relay designs requiring high thermal endurance
• AC power switching circuits in harsh environmental conditions

Triacs Procurement Notes

Verify the specific suffix H6 against the manufacturer's latest datasheet to confirm the isolated package variant and high-temperature rating. Ensure the ordering quantity aligns with the standard tube packaging configuration provided by authorized distributors. Cross-reference the part number with official Littelfuse documentation to validate compliance with RoHS and REACH standards before finalizing procurement.

Triacs Selection Notes

Select this component when application requirements demand both high current capacity and extended operating temperatures beyond standard limits. The 400 V rating suits general-purpose AC mains applications, while the 80 mA gate trigger current requires compatible drive circuitry. Consider the TO-220AB-3 footprint for PCB layout constraints and verify that the thermal resistance characteristics meet the system's heat dissipation needs.

Triacs Part Context

This triac belongs to the QJxx25xHx series from Littelfuse, which specializes in high-temperature thyristor solutions. The series is engineered to provide reliable performance in applications where standard components may fail due to excessive heat. The QJ4025JH6TP represents a specific configuration within this family, combining high current ratings with specialized thermal and isolation features.

Triacs Replacement Considerations

Direct replacements must match the 25 A current, 400 V voltage, and TO-220AB-3 isolated package. Verify gate trigger current compatibility, as variations between 50 mA and 80 mA affect driver design. Check if alternative parts offer similar high-temperature ratings or if the isolation requirement can be relaxed.