50 ns trr — the switching edge this diode delivers
The STTH15RQ06W is a 600 V, 15 A fast-recovery diode from STMicroelectronics, part of the ECOPACK® series.
600 V blocking, 15 A forward — the thermal budget
Rated for 600 V DC reverse voltage (Vr max) and 15 A average rectified current (Io), this diode fits 400 V bus rails and PFC output stages with margin. The forward voltage drop is 2.95 V max at 15 A — conduction loss at full load is about 44 W, so the DO-247 tab must be bolted to a heatsink sized for the junction-to-case thermal path. Junction temperature is rated to 175°C max, which allows operation in high-ambient environments such as enclosed power supplies or motor-drive cabinets. Reverse leakage at 600 V is 20 µA — negligible at room temperature but rises with junction temperature; budget for it in the thermal design.
DO-247-2 through-hole — mounting and thermal interface
The DO-247-2 package with straight leads is a through-hole, tab-mount package. The copper tab is the cathode and the primary heat path — it must be soldered or bolted to a heatsink with a thermal interface material. The through-hole leads handle the 15 A continuous current without trace-lift risk, but the PCB pad area under the tab sets the effective RthJA.