QK025R6

Triacs Overview

The Littelfuse QK025R6 is a high-reliability Alternistor TRIAC designed for demanding AC power control applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV 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 utilizes a TO-220AB isolated package. Key electrical parameters include a maximum holding current of 100 mA, a gate trigger voltage of 2.5 V, and a gate trigger current of 50 mA. It exhibits a typical on-state voltage of 1.8 V and a leakage current of 20 uA at VDRM.

Triacs Feature Summary

• High dv/dt capability ensures reliable commutation in noisy environments
• Isolated flange mount construction facilitates efficient thermal management
• Sensitive gate design allows direct interfacing with standard logic drivers

Triacs Applications

• Industrial motor speed control systems
• Solid-state relays for high-power loads
• Inverter circuits requiring robust switching performance

Triacs Procurement Notes

Verify the specific suffix 'R6' against official Littelfuse documentation to confirm exact gate characteristics and availability status. Confirm RoHS compliance and lead times directly with authorized distributors or the manufacturer before finalizing procurement plans.

Triacs Selection Notes

Select this component when high blocking voltage and significant current handling are required in an isolated package. Ensure the application's gate drive circuit can supply the specified 50 mA trigger current. Verify that the thermal resistance of the heatsink system supports the 25 A RMS rating under expected operating conditions.

Triacs Part Context

This part belongs to the Qxx25xx series of Alternistors from Littelfuse. These devices are engineered for superior performance compared to standard TRIACs, particularly regarding commutation capabilities and thermal stability in high-frequency or high-voltage industrial power electronics.

Triacs Replacement Considerations

The QK025L6TP is a related variant within the same family but differs in gate trigger specifications. Verify compatibility if substituting, as gate requirements may necessitate changes to the driving circuitry.