The G40T120BK3SD is a rugged Trench-Gate Field-Stop (FS) IGBT designed for high-voltage and high-frequency switching applications. Rated at 1200V and 40A, it is specifically built to handle the rigorous back-EMF and current surges found in inductive loads. It features an integrated ultra-fast recovery diode, making it a self-contained solution for switching circuits. This transistor is the industry standard for repairing high-end induction hobs and solar inverters.
Key Features
High Voltage Rating: 1200V capacity makes it ideal for 220V/230V AC mains-powered equipment and industrial machinery.
Trench-FS Technology: Offers low conduction losses and a very low VCE(sat), meaning it stays cooler during high-load operations.
Built-in Diode: Includes a co-packaged “Free-Wheeling” diode with very short reverse recovery time (Trr).
High Switching Speed: Optimized for PWM frequencies, reducing “switching noise” and increasing system efficiency.
TO-247 Package: Large metal tab for superior heat dissipation when mounted to a heatsink.
Technical Specifications
Feature
Specification
Collector-Emitter Voltage (VCES)
1200V
Continuous Collector Current (IC)
40A (at 100°C) / 80A (at 25°C)
Pulsed Collector Current (IC,pulse)
120A
Saturation Voltage (VCE,sat)
~1.8V to 2.2V (Typical)
Gate-Emitter Voltage (VGES)
±20V
Total Power Dissipation (PD)
350W (Max)
Package Type
TO-247 (Through-Hole)
Common Applications
Induction Cooktops: The primary switching element for the induction heating coil.
UPS & Solar Inverters: Power stage for DC-to-AC conversion.
Motor Drives: Variable Frequency Drives (VFDs) and industrial motor control.
Welding Machines: High-power DC arc
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