650 V, 60 A fast recovery diode in TO-247-3
The Infineon IDW30E65D1FKSA1 is a standard fast recovery diode rated for 650 V reverse voltage and 60 A average rectified current, housed in a PG-TO247-3-1 through-hole package. It targets the output stage of motor drives, power factor correction circuits, and uninterruptible power supplies where hard-switched bridge legs need a controlled reverse recovery transient.
115 ns reverse recovery — what it buys the switching loop
The 115 ns reverse recovery time (trr) is the headline switching parameter. In a hard-switched half-bridge, trr sets the overlap interval during which the diode carries reverse current before blocking. A 115 ns trr keeps the recovery charge low enough that the complementary IGBT or MOSFET does not see an excessive current spike at turn-on, which directly limits the snubber requirement and the switching loss in the active device.
175°C junction — thermal headroom for industrial duty
For a motor drive or welding inverter pulling 60 A average through the TO-247 body, the 175°C ceiling gives roughly 25°C of margin above the typical 150°C limit of standard recovery diodes before derating the forward current. The 40 µA reverse leakage at 650 V and 25°C rises with junction temperature; at 175°C the leakage contribution to the thermal budget needs to be factored into the heatsink calculation.
Forward drop at the operating point
Maximum forward voltage is 1.7 V at 30 A — half the rated average current.
Package and mounting — TO-247-3
The PG-TO247-3-1 package is a standard three-lead through-hole with a large backside tab for heatsink mounting. The 60 A average rating assumes the tab is bolted to a heatsink with adequate thermal interface material; free-air operation derates the current substantially. The through-hole leads suit wave-solder assembly and field replacement in terminal-block or bus-bar layouts.
Sourcing and compliance
It is ROHS3 compliant.