QJ8025RH4TP

Triacs Overview

The Littelfuse QJ8025RH4TP is a bidirectional TRIAC designed for high-temperature applications, operating within a junction temperature range of -40°C to +150°C. It features an RMS on-state current (It RMS) of 25 A and a rated repetitive off-state voltage (VDRM) of 800 V. The device exhibits a maximum non-repetitive on-state peak current of 250 A and a low on-state voltage of 1.8 V. Gate triggering requirements include a maximum voltage of 1.3 V and a maximum current of 35 mA. The component utilizes a TO-220AB-3 through-hole package with an isolated tab, ensuring electrical isolation from the heatsink.

Triacs Feature Summary

• High-temperature capability supporting operation up to 150°C junction temperature
• Isolated tab construction in TO-220AB package for secure mounting without additional insulators
• Sensitive gate design allowing direct interfacing with standard logic circuits

Triacs Applications

• Solid-state relays requiring high thermal stability
• Industrial motor control systems
• Lighting dimmer circuits for commercial environments

Triacs Procurement Notes

Verify the specific suffix RH4TP against official Littelfuse documentation to confirm pinout and isolation characteristics. Ensure the procurement channel provides valid RoHS compliance certificates as required by project specifications. Cross-reference the manufacturer part number with authorized distributor databases to validate authenticity and traceability before finalizing orders.

Triacs Selection Notes

Select this component when designs demand robust performance at elevated temperatures exceeding standard 125°C limits. The 800 V rating suits general AC power switching applications where moderate blocking voltage is sufficient. Consider the TO-220AB package for ease of manual assembly or simple automated placement compared to surface-mount alternatives.

Triacs Part Context

This device belongs to the QJxx25xHx series of high-temperature TRIACs manufactured by Littelfuse. The series is engineered specifically for demanding industrial environments where reliability under thermal stress is critical. It serves as a discrete thyristor solution within the broader Littelfuse power semiconductor portfolio.

Triacs Replacement Considerations

The QJ8025LH4TP shares identical electrical ratings but may differ in packaging or manufacturing lot specifics. Verify pin compatibility and thermal resistance parameters before substitution. Consult Littelfuse engineering for confirmation regarding interchangeability in existing board layouts.