What this SiC Schottky brings to the power stage
The Infineon IDK04G65C5XTMA2 is a 650 V, 4 A silicon-carbide Schottky diode from the CoolSiC™+ generation, built for hard-switched power converters where silicon ultrafast diodes leave switching losses on the table. Its zero reverse-recovery time (0 ns trr) means the diode never stores minority carriers — no recovery charge to sweep out, no dead-time penalty in a continuous-conduction-mode PFC boost stage or a phase-shifted full bridge. The 175 °C maximum junction temperature gives headroom for high-ambient telecom rectifiers and solar inverters where the thermal loop is tight.
Package and thermal path
The D²Pak (TO-263-2) surface-mount package puts the die close to the PCB copper pour — the tab is the cathode terminal and the primary heat path. Layout needs sufficient copper area on the drain pad to keep the junction below 175 °C at full load.
Lifecycle and sourcing posture
The IDK04G65C5XTMA2 carries an Active product status — no last-time-buy notice, no NRND flag. Infineon continues to manufacture the CoolSiC™+ generation alongside the newer Gen6 and G7 families, so this part remains a valid selection for production builds.