40 V, 80 A N-channel in DPAK — what the ratings mean for your load
The STD80N4F6 is an N-channel power MOSFET from STMicroelectronics, built on the DeepGATE™ and STripFET™ VI process. The 6 mOhm maximum on-resistance at 40 A and 10 V gate drive means conduction losses stay under 10 W at full rated current — the 70 W package dissipation limit leaves thermal headroom for switching losses in a motor-drive or DC-DC converter application.
Gate charge and input capacitance — sizing the gate driver
Total gate charge is 36 nC at 10 V Vgs. Input capacitance Ciss is 2150 pF at 25 V Vds. This sets the drive impedance needed to stay within the rise-time budget — a 10-Ohm gate resistor gives roughly a 22 ns RC time constant, which is fast enough for most hard-switched topologies without excessive ringing. With a 10 V drive (the recommended Vgs for minimum Rds(on)), the gate overdrive is 6 V — well above the threshold, ensuring full enhancement across the operating temperature range.
Package and board-fit — DPAK footprint
The STD80N4F6 is supplied in a TO-252-3 DPAK package, surface-mount with two leads and a tab. Available in Tape & Reel (TR) and Cut Tape (CT) formats. The DPAK footprint is standard and mates with the same land pattern as other TO-252 devices in the STripFET family.
The base product number is STD80, which covers the 40 V N-channel family in DPAK. The full order code STD80N4F6 distinguishes the 40 V, 80 A variant with the 6 mOhm Rds(on) grade.
