80N08 MOSFET — Specifications & Equivalents
About the 80N08
The 80N08 is an N-channel MOSFET with a drain–source voltage (VDS) rating of 80 V, a continuous drain current (ID) of 80 A and an on-resistance (RDS(on)) of 0.012 Ω. It can dissipate up to 300 W and is rated to a junction temperature of 150 °C. It is available in TO-247, TO-220 and TO-263 packages, so confirm the pinout of the exact variant you order.
At a glance
- Type: N-channel MOSFET
- Max drain–source voltage (VDS): 80 V
- Max continuous drain current (ID): 80 A
- On-resistance (RDS(on)): 0.012 Ω
- Power dissipation (PD): 300 W
- Max junction temperature (TJ): 150 °C
- Package: TO-247, TO-220, TO-263
Typical applications
With its 80 V drain–source rating the 80N08 sits in the mid-range class of switching MOSFETs, typically found in 24 V and 48 V industrial and battery systems, motor drives and H-bridges and load and hot-swap switching.
The 80 A current rating puts it in high-current territory, where conduction loss (I² × RDS(on)) and thermal design usually matter more than switching loss. Budget for adequate copper area and a heatsink.
The low 0.012 Ω on-resistance keeps conduction loss down, which suits synchronous rectification and continuous high-current paths.
Gate drive and switching notes
Keep gate–source voltage within the ±20 V maximum; exceeding it punctures the gate oxide and destroys the device permanently.
Switching behaviour is characterised by a rise time of 50 ns and an output capacitance (Coss) of 1260 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the 80N08
A drop-in substitute for the 80N08 must be the same N-channel type and offer a drain–source rating of at least 80 V, a continuous drain current rating of at least 80 A and an on-resistance no higher than 0.012 Ω if efficiency and heat matter.
Mechanically, check the replacement against the TO-247, TO-220 and TO-263 footprint and confirm the pin order — parts sharing a package outline do not always share a pinout.
Where the application switches inductive loads or runs near the voltage limit, keep extra headroom rather than choosing a part that only just meets the original numbers.
Frequently asked questions
What is the 80N08?
The 80N08 is an N-channel MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 80 V drain-source and 80 A continuous drain current.
What is the maximum voltage of the 80N08?
The 80N08 has a maximum drain-source voltage (Vds) of 80 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the 80N08 handle?
It is rated for 80 A of continuous drain current, with power dissipation limited to 300 W. Real-world capability depends on your heatsinking and ambient temperature.
What is the on-resistance of the 80N08?
On-resistance (Rds(on)) is 0.012 Ω. Multiply by the square of your load current to estimate conduction loss.
What package does the 80N08 come in?
It is listed in TO-247, TO-220 and TO-263. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the 80N08?
No verified equivalents are listed yet. Choose a part of the same polarity that meets or exceeds every rating above and shares a compatible package and pinout.
Key Specifications
| Type | MOSFET |
|---|---|
| Channel Type | N -Channel |
| Drain-Source Voltage (Vds) | 80 V |
| Gate-Source Voltage (Vgs) | 20 V |
| Drain Current (Id) | 80 A |
| Drain-Source On-Resistance (Rds) | 0.012 |
| Rise Time (tr) | 50 nS |
| Output Capacitance (Coss) | 1260 pF |
| Junction Temperature (Tj) | 150 °C |
| Package | TO-247 TO-220 TO-263 |
| Power Dissipation (Pd) | 300 W |
Equivalent & Replacement Parts
No verified equivalents are listed for 80N08 yet.