Product Description

The DKFT1500A 8-18 Fast Turn-Off Thyristor is a high-power semiconductor device engineered for fast switching and heavy-current industrial power control systems. It features an interdigitated amplifying gate, high di/dt capability, and low switching loss, helping improve efficiency and reliability in demanding operating conditions. With an average on-state current of 1500A, repetitive peak off-state and reverse voltage from 800V to 1800V, and surge current capacity up to 18kA, this thyristor is well suited for medium- and high-power converter equipment. Its double-side cooled structure, low thermal resistance of 0.016°C/W, and 650g robust disc package support stable thermal performance in high-power applications.

 Features

• Interdigitated amplifying gate: Enables fast triggering and stable gate control

• Fast switching performance: 18–50μs turn-off time supports rapid switching applications

• High current capability: Rated for 1500A average on-state current

• Low switching losses: Helps improve efficiency and reduce thermal stress

• High surge capability: Withstands up to 18kA surge current for reliable operation

• Double-side cooling design: Improves heat dissipation in high-power systems

• Wide voltage range: Available from 800V to 1800V repetitive peak voltage ratings

Applications

• Power converters

• DC chopper systems

• Induction heating equipment

• Industrial power control systems

• High-current switching circuits

• Medium- and high-power electronic equipment