1200 V / 50 A TrenchStop IGBT in TO-247-3
The Infineon IGW25T120FKSA1 is a 1200 V, 50 A NPT Trench Field Stop IGBT from the TrenchStop series, housed in a through-hole TO-247-3 package. It is designed for hard-switching power conversion in industrial drives, UPS systems, and welding inverters where 1200 V bus voltage isolation and 150°C junction capability are required.
Conduction and switching losses at the operating point
At the test condition of 600 V bus, 25 A collector current, 22 Ω gate resistor, and 15 V gate drive, the IGW25T120FKSA1 delivers a Vce(on) of 2.2 V typical and a total switching energy of 4.2 mJ. The 155 nC gate charge sets the drive current requirement — a typical gate driver with 2 A peak source/sink capability will switch this device in the 50 ns turn-on / 560 ns turn-off window at 25°C. The 190 W maximum power dissipation in the TO-247 package means the thermal interface to the heatsink is the limiting factor for continuous current — expect to derate from the 50 A Ic rating in real-world enclosures above 100°C case temperature.
Package, mounting, and temperature grade
The PG-TO247-3-1 supplier package is a standard TO-247 with three leads and an isolated mounting hole. The through-hole leads require a 0.040-inch (1.0 mm) drilled hole per lead in the PCB, with adequate creepage distance — at 1200 V working voltage, 6.4 mm minimum clearance per IEC 60950 is typical between collector tab and any grounded heatsink. Rated for continuous junction operation from -40°C to 150°C, this IGBT suits outdoor telecom rectifiers, solar inverter DC-AC stages, and motor drive output stages where the ambient may cycle below freezing.
ROHS3 compliant, with no lead in the solder plating or mould compound.