STF6N95K5

STMicroelectronics

STMicroelectronics SuperMESH5™ STF6N95K5, N-Channel MOSFET, 950 V Vdss, 9 A Id, 1.25 Ohm Rds(on) at 10 V, TO-220-3 Full Pack, -55°C to 150°C.

STMicroelectronics STF6N95K5
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Technical specifications

STF6N95K5 specifications
Parameter / AttributeSpecification / Value
SeriesSuperMESH5™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage950 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C9A (Tc)
Power dissipation25W (Tc)
Operating temperature-55°C~150°C(TJ)
PackageTube
Vgs±30V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3 Full Pack
Vgs(th) (Max) @ id5V @ 100µA
Rds on (Max) @ id, vgs1.25Ohm @ 3A, 10V
Gate charge (Qg) (Max) @ vgs13 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds450 pF @ 100 V

Technical details

The 950 V Vdss is the standout spec — it gives you nearly 200 V of headroom above a typical 800 V bus, which matters in offline converters where ringing on the drain can exceed the nominal rail. The 9 A continuous current is rated at case temperature 25°C; you'll need to derate based on your actual case temperature and the 25 W power dissipation limit. Gate charge is 13 nC at 10 V, which is modest — a small driver or even a logic-level gate drive IC can switch it without excessive drive losses. Input capacitance is 450 pF at 100 V, so the switching speed is manageable for frequencies up to around 100 kHz in hard-switched topologies.

Package and mounting: TO-220FP

That saves assembly time and reduces thermal resistance slightly compared to adding an insulator. The through-hole leads suit boards where vibration or thermal cycling is a concern. Maximum junction temperature is 150°C, and the operating temperature range covers -55°C to 150°C, so it handles industrial and outdoor environments without issue.

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