The Infineon IPA60R099C6XKSA1 is officially listed as Obsolete. This means Infineon has discontinued production and no further factory orders are accepted. For sustainment of existing designs, procurement must go through independent distribution channels for remaining stock or qualified surplus.
600V, 99mOhm, 37.9A — the CoolMOS C6 sweet spot
This is an N-channel CoolMOS C6 power MOSFET in a PG-TO220-FP (full-pack, isolated tab) package. The 600V drain-to-source voltage rating and 99mOhm typical Rds(on) at 10V gate drive with 18.1A drain current place it in the sweet spot for high-efficiency switched-mode power supplies, PFC stages, and flyback converters in the 150W–400W range. Gate charge is 119 nC at 10V, and input capacitance is 2660 pF at 100V drain-source — these switching figures matter for the gate drive design and switching loss calculation.
PG-TO220-FP — isolated tab saves a washer
The PG-TO220-FP (full-pack) package has a fully isolated metal tab. The through-hole mounting suits point-to-point wiring, perfboard prototypes, and designs where vibration resistance from a bolted package is preferred over surface-mount.