650 V SiC MOSFET — what the 64 mOhm Rds(on) means on your power stage
The Infineon IMBG65R048M1HXTMA1 is a CoolSiC™ N-channel silicon carbide MOSFET in a PG-TO263-7-12 surface-mount package. The 64 mOhm Rds(on) at 18 V gate drive is the number that sets your conduction loss budget. At 20 A load current, I²R loss runs about 26 W — that's the heat the package has to sink through the TO263-7 tab. The 183 W power dissipation rating at the case gives you headroom if you keep the junction below 175°C. Gate charge is 33 nC at 18 V. That's low enough that a standard MOSFET driver with 2 A peak current can switch it at 100 kHz with about 3.3 mA average drive current. The input capacitance is 1118 pF at 400 V drain bias — the low Ciss at high Vds is a SiC advantage that reduces driver-side switching loss at light loads.
Junction temperature ceiling — 175°C vs the usual 150°C
The operating junction temperature range runs from -55°C to 175°C. That 175°C upper limit is 25°C higher than most silicon CoolMOS™ parts can manage. In a compact 650 V power stage — say a 2 kW totem-pole PFC or a 1.5 kW DC-DC converter — that extra thermal margin means you can shrink the heatsink or push more current before hitting the derating curve. The gate threshold voltage maximum is 5.7 V at 6 mA drain current. With a recommended drive voltage of 18 V for minimum Rds(on), the gate overdrive is about 12 V — well clear of the threshold window and safely inside the +23 V / -5 V absolute maximum gate rating.
Active production and compliance — no LTB clock ticking
ROHS3 compliance is confirmed.