MOSFET thermal checklist: from RDS(on) to PCB temperature rise
Put conduction loss, switching loss, thermal resistance, and PCB heat spreading into one calculation instead of trusting rated current.
Clestek Engineering Journal
Field-tested notes on component selection, circuit behavior, and reliable electronic design—written for engineers who build real products.
Use transient-current loops, package inductance, and frequency response to choose capacitance, quantity, and placement together.
Read article ↗Clear calculations, failure modes, and verification steps you can use in the next schematic or lab session.
Put conduction loss, switching loss, thermal resistance, and PCB heat spreading into one calculation instead of trusting rated current.
Verify topology and termination before biasing, common-mode range, and waveforms—do not blame the protocol stack first.
Contact resistance, loaded positions, wire gauge, ambient temperature, and housing cooling determine safe system current.