MDmesh™ 500 V N-channel MOSFET in DPAK
500 V blocking and 110 W dissipation — sizing the thermal budget
The 500 V Vdss rating covers the bulk-capacitor voltage in a universal-input flyback or PFC stage with healthy derating for transients. At 110 W maximum power dissipation (case temperature referenced), the junction-to-case thermal path must be kept low; the DPAK's exposed tab is the primary heat-removal route. A 280 mOhm Rds(on) at 10 V means conduction losses stay manageable at the 6.5 A test point, but at 13 A full load the I²R loss reaches 47 W — check the SOA curve and heatsinking before committing to continuous operation at the rated current.
Gate drive and switching — 19.5 nC Qg at 10 V
For production BOMs this removes the urgency to qualify a substitute, though a second-source evaluation for dual-sourcing resilience is always a prudent step.