1. On‑Resistance (Rds On) - STF10N65K3: 1Ω @ 3.6A, 10V - TSM10NC65CF: 900mΩ @ 2A, 10V - The TSM10NC65CF exhibits lower on‑resistance, resulting in reduced conduction loss at the same current. This contributes to higher system efficiency, particularly in high‑current continuous‑conduction applications. 2. Gate Charge (Qg) & Input Capacitance (Ciss) - STF10N65K3: Qg = 42nC, Ciss = 1180pF @ 25V - TSM10NC65CF: Qg = 34nC, Ciss = 1650pF @ 50V - The lower Qg of the TSM10NC65CF suggests potentially faster switching and lower gate‑drive losses. However, its higher Ciss (note the different test voltages) should be evaluated for driver compatibility in high‑frequency switching designs. 3. Maximum Power Dissipation - STF10N65K3: 35W - TSM10NC65CF: 45W - The TSM10NC65CF offers a higher theoretical thermal capability, allowing it to handle greater power or operate at higher ambient temperatures under equivalent cooling conditions. 4. Technology Platform & Test Condition Discrepancies - The STF10N65K3 utilizes SuperMESH3™ technology, which emphasizes optimized switching performance and reliability; the TSM10NC65CF does not specify a proprietary technology series. - Rds On test currents differ (3.6A vs 2A); a direct comparison should refer to the full characteristic curves. - The ST part may feature enhanced short‑circuit withstand capability or avalanche ruggedness. Critical limits should be checked against the actual application (e.g., flyback converters, PFC stages).