1. Technology and Core FOM (Figure of Merit): These parts represent different high-voltage MOSFET technology paths. ST's MDmesh™ M2 is an optimized traditional planar structure, focusing on a balance between on-state resistance and cost. Infineon's CoolMOS™ P6 utilizes Superjunction technology. The most direct reflection of this is in gate charge Qg (11 nC vs. 35 nC). The P6's extremely low Qg enables very fast switching speeds and significantly reduced switching losses. This makes it particularly suitable for high-frequency switching power supplies (e.g., >100 kHz), where it can improve system efficiency and simplify thermal design. 2. Rds(on) Test Conditions and Implications: The specified Rds(on) values (ST: 180mΩ @10A vs. Infineon: 190mΩ @7.6A) are not directly comparable. This indicates potentially different Rds(on) linearity (positive temperature coefficient behavior). P6 technology often exhibits a slightly higher Rds(on) at low currents, but the actual conduction loss difference at operating junction temperature may be much smaller than the nominal values suggest. Designers must evaluate conduction loss based on actual operating current and junction temperature, not solely on room-temperature nominal values. 3. Voltage Rating and Design Margin: The Vdss difference (600V vs. 650V) is a key limitation. In applications with voltage spikes, such as flyback PFC or motor drives, the 650V device provides greater design margin and reliability. If the line voltage is high (e.g., 540VDC after rectification of three-phase 380VAC) or transformer leakage inductance is significant, careful evaluation and snubber circuit optimization are required when selecting a 600V device. 4. Thermal Performance and Package: The difference in nominal power dissipation (151W vs. 170W) stems primarily from package thermal resistance. The PG-TO220-3 package (Infineon) typically offers slightly better thermal performance. However, ST's higher power rating suggests a theoretical thermal capacity advantage under extremely high ambient temperatures or sustained high-power conditions. Actual thermal performance is heavily dependent on heatsink design. 5. Cost and Cost-Effectiveness: The price difference is significant (-34%). Combined with its superior switching performance, the IPP60R190P6XKSA1 offers high cost-effectiveness at the system level (potentially allowing for smaller heatsinks and magnetic components) and in efficiency, making it a primary driver for substitution.