75T65 High Power IGBT Transistor 650V 75A TO-247 Field Stop Trench Transistor for Solar Inverters & Welding Plants

Overview

The 75T65 (commonly found as FGH75T65, K75T65, or FHA75T65) is a high-performance, 4th-generation Field Stop Trench IGBT. Unlike traditional power MOSFETs that hit their limits around high voltages, this component is engineered specifically for high-power, high-efficiency switching. Housed in a large TO-247 package for superior thermal management, it is the standard replacement part for repairing imported solar inverters, commercial online UPS setups, and industrial arc welding machines.

Key Features

• The IGBT Advantage: Combines the high input impedance of a MOSFET with low conduction losses of a bipolar transistor.

• Trench Field Stop Technology: Minimizes switching and conduction power losses, keeping the device highly efficient.

• Rugged TO-247 Housing: Larger metal back-plate than standard TO-220, allowing for massive heat transfer during heavy load operations.

• Positive Temperature Coefficient: Makes it incredibly easy to wire multiple 75T65 transistors in parallel without thermal runaway.

Technical Specifications

Primary Applications

• Solar Inverter Repair: Essential for repairing the high-voltage switching stages of local solar systems (Inverex, Crown, Knox, etc.).

• Industrial Welding Machines: The primary power switch used in electronic stick/TIG arc welding plants.

• Online UPS Systems: Handles heavy-duty AC-to-DC and DC-to-AC power conversions.