Gate charge and switching — driver sizing
The STF10NK50Z: Total gate charge is 39.2 nC at 10 V. Input capacitance is 1219 pF at 25 V drain-source.
Obsolete — sourcing the BOM line
STMicroelectronics lists the STF10NK50Z as obsolete.
STF10NK50Z N-Channel MOSFET, 500 V, 9 A, TO-220FP, Obsolete
MPNSTF10NK50Z
Obsolete
STMicroelectronics SuperMESH N-Channel MOSFET, 500 V drain-source, 9 A continuous drain, 700 mOhm Rds(on) at 10 V gate drive, TO-220 Full Pack, -55 to 150 °C junction.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | SuperMESH™ |
| FET type | N-Channel |
| Mounting | Through Hole |
| Drain to source voltage | 500 V |
| Drive voltage (Max rds on, min rds on) | 10V |
| Current - continuous drain (Id) @ 25°C | 9A (Tc) |
| Power dissipation | 30W (Tc) |
| Operating temperature | -55°C~150°C(TJ) |
| Package | Tube |
| Vgs | ±30V |
| Technology | MOSFET (Metal Oxide) |
| Case | TO-220-3 Full Pack |
| Vgs(th) (Max) @ id | 4.5V @ 100µA |
| Rds on (Max) @ id, vgs | 700mOhm @ 4.5A, 10V |
| Gate charge (Qg) (Max) @ vgs | 39.2 nC @ 10 V |
| Input capacitance (Ciss) (Max) @ vds | 1219 pF @ 25 V |
Product details
Frequently asked questions
Is STF10NK50Z obsolete?
Yes, STMicroelectronics has marked the STF10NK50Z as obsolete. No official replacement part number is listed.
What is the Rds(on) of STF10NK50Z?
Maximum on-resistance is 700 mOhm at 4.5 A drain current with 10 V gate-to-source voltage.
What package is STF10NK50Z?
Through-hole TO-220-3 Full Pack, also designated as TO-220FP in the supplier device package field. The full-pack moulding isolates the tab electrically, so no insulating washer is needed between the device and the heatsink.