What the 650 V / 50 A rating buys you in a traction inverter
The Infineon AIKW50N65DF5XKSA1 is a 650 V, 50 A Trenchstop™ 5 IGBT in a TO-247-3 through-hole package, qualified to AEC-Q101 and rated for a 175°C junction temperature. It targets hard-switched traction inverters, on-board chargers, and DC-DC converters in hybrid and electric vehicles where the DC-link sits at 400 V nominal. The 650 V breakdown gives about 250 V of headroom above a 400 V bus — enough for typical load-dump and switching overshoot without derating into the next voltage class.
Switching loss budget at 20–50 kHz
Under the test condition of 400 V, 25 A, 12 Ω gate resistance, and 15 V gate drive, the part switches 490 µJ during turn-on and 140 µJ during turn-off. That asymmetry — roughly 3.5:1 — is typical for a Trench IGBT optimised for low Vce(on), and it means the turn-on loss dominates the total. A designer budgeting for a 20 kHz PWM rate should plan for roughly 12.6 W of switching loss per device at that operating point, before factoring in the gate-driver's 1018 nC charge requirement. The 21 ns turn-on delay and 156 ns turn-off delay are tight enough for dead-time compensation in a typical motor-control loop.
Automotive-grade qualification — what AEC-Q101 means on the shop floor
This part carries an Automotive grade label and AEC-Q101 qualification. The ROHS3 compliance is confirmed in the lifecycle record. Lifecycle status is Active, so no NRND or last-time-buy horizon is on the table for production planning.
Package and thermal path
The PG-TO247-3-41 package is a standard TO-247-3 outline with a fully isolated tab. The 270 W power dissipation rating assumes the case is held at 25°C — in a real 85°C coolant loop, derate that to roughly 170 W using the junction-to-case thermal resistance typical of the package. Through-hole mounting suits a bolted heatsink interface; the large copper tab carries the bulk of the dissipation.