QK025NH6TP

Triacs Overview

The Littelfuse QK025NH6TP is a high-reliability Alternistor TRIAC designed for robust power control applications. It features a rated repetitive off-state voltage (VDRM) of 1000 V and an on-state RMS current (IT(RMS)) of 25 A. The device operates within a junction temperature range of -40°C to +125°C and is housed in an isolated TO-263AB (D2PAK-3) package. Key electrical parameters include a maximum holding current of 100 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 80 mA. It exhibits a minimum critical rate of rise of off-state voltage (dv/dt) of 400 V/µs and a minimum critical rate of rise of commutating dv/dt of 30 V/µs.

Triacs Feature Summary

• High reliability construction suitable for demanding industrial environments
• Isolated tab configuration for efficient thermal management and mounting flexibility
• Robust switching characteristics with high dv/dt immunity

Triacs Applications

• Industrial motor control systems
• Solid-state relays
• High-voltage AC power switching circuits

Triacs Procurement Notes

Verify the specific suffix 'H' against official Littelfuse documentation to confirm the exact pinout and isolation specifications for the TO-263AB package. Ensure that the 1000V rating aligns with the circuit's peak inverse voltage requirements. Confirm compliance with RoHS directives if required by the target market regulations.

Triacs Selection Notes

Select this component when a 1000V blocking capability is required in a surface-mount form factor. The 25A RMS rating supports moderate to high-power loads. Consider the 1.3V gate trigger voltage for driver compatibility. The isolated tab design simplifies heatsinking compared to non-isolated alternatives in similar voltage classes.

Triacs Part Context

This part belongs to the Qxx25xxHx series of Alternistor TRIACs from Littelfuse. These devices are engineered as high-performance replacements for traditional thyristors in high-voltage applications. The series emphasizes reliability and ruggedness, targeting industries where failure is not an option.

Triacs Replacement Considerations

Direct substitutes must match the 1000V VDRM, 25A IT(RMS), and TO-263AB package. Verify gate trigger characteristics and dv/dt ratings to ensure functional equivalence in the specific application circuit.