The Infineon IKW50N65SS5XKSA1 is a 650 V, 80 A Trench Field Stop IGBT from the TrenchStop™ 5 series, housed in a standard TO-247-3 through-hole package. It targets hard-switching applications such as motor drives, uninterruptible power supplies, and solar inverters where conduction and switching losses determine heatsink size and system efficiency. The 1.7 V typical Vce(on) at 50 A gives a direct handle on conduction loss per device in a bridge leg, while the 320 µJ turn-on and 550 µJ turn-off energies (tested at 400 V, 50 A, 9 Ω gate resistor) let you model switching loss without guesswork.
Switching energy and gate drive — sizing the gate resistor and snubber
The test condition for the switching energies (400 V, 50 A, 9 Ω, 15 V) is representative of a 400 Vdc bus driving a 50 A load. The 110 nC gate charge means the driver must source and sink that charge each cycle; a 9 Ω external gate resistor is a reasonable starting point for balancing switching loss against EMI. If your design runs at higher switching frequencies, the 550 µJ turn-off energy dominates the loss budget — plan the thermal path accordingly.
Package and mounting — TO-247-3 in a through-hole power layout
The PG-TO247-3 package uses the standard TO-247 footprint with a large collector tab for heatsink mounting. Through-hole assembly suits wave-solder or hand-solder rework in prototype and MRO environments. The 274 W maximum power dissipation assumes the tab is bolted to an adequate heatsink with thermal compound — no derating for free-air operation at that level.
Store the reels dry — standard MSL handling applies for the TO-247 body, though the through-hole lead form is less moisture-sensitive than fine-pitch SMD packages.