900 V, 7 A switching in a full-pack TO-220
The STF7N90K5 is an N-channel MOSFET from STMicroelectronics' MDmesh™ K5 series, rated for 900 V drain-to-source voltage and 7 A continuous drain current at 25°C case temperature. Housed in a TO-220FP full-pack through-hole package, the tab is fully isolated — no extra insulating washer or pad needed when bolting to a heatsink or chassis, which simplifies assembly and cuts BOM count.
Thermal and drive requirements for the BOM
Maximum power dissipation is 25 W, with the junction rated from -55°C to 150°C — the full industrial temperature band, so this part handles outdoor or engine-bay thermal cycling without derating at the low end. Gate drive is specified at 10 V for minimum on-resistance, and the gate-to-source maximum is ±30 V — a standard 12 V or 15 V gate drive rail stays well within the safe window. Threshold voltage is 5 V max at 100 µA drain current, meaning the device starts conducting well below the 10 V drive level, giving clean turn-on across the full temperature range.
Active lifecycle and compliance status
STMicroelectronics lists the STF7N90K5 as Active — no end-of-life notice, no NRND flag, so it remains a current-production part suitable for new designs and ongoing production builds. Fully ROHS3 compliant, with no exemptions on restricted substances — clears EU and global regulatory requirements without additional documentation overhead.