FB180SA10 MOSFET — Specifications & Equivalents
About the FB180SA10
The FB180SA10 is an N-channel MOSFET with a drain–source voltage (VDS) rating of 100 V, a continuous drain current (ID) of 180 A and an on-resistance (RDS(on)) of 0.0065 Ω. It can dissipate up to 480 W and is rated to a junction temperature of 150 °C. It is supplied in the SOT227 package.
At a glance
- Type: N-channel MOSFET
- Max drain–source voltage (VDS): 100 V
- Max continuous drain current (ID): 180 A
- On-resistance (RDS(on)): 0.0065 Ω
- Power dissipation (PD): 480 W
- Max junction temperature (TJ): 150 °C
- Package: SOT227
Typical applications
With its 100 V drain–source rating the FB180SA10 sits in the medium-voltage class of switching MOSFETs, typically found in 48 V and 96 V distribution systems, solar and telecom power stages, DC motor drives and intermediate-bus DC-DC converters.
The 180 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 0.0065 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.
Choosing a replacement for the FB180SA10
A drop-in substitute for the FB180SA10 must be the same N-channel type and offer a drain–source rating of at least 100 V, a continuous drain current rating of at least 180 A and an on-resistance no higher than 0.0065 Ω if efficiency and heat matter.
Mechanically, check the replacement against the SOT227 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 FB180SA10?
The FB180SA10 is an N-channel MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 100 V drain-source and 180 A continuous drain current.
What is the maximum voltage of the FB180SA10?
The FB180SA10 has a maximum drain-source voltage (Vds) of 100 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the FB180SA10 handle?
It is rated for 180 A of continuous drain current, with power dissipation limited to 480 W. Real-world capability depends on your heatsinking and ambient temperature.
What is the on-resistance of the FB180SA10?
On-resistance (Rds(on)) is 0.0065 Ω. Multiply by the square of your load current to estimate conduction loss.
What package does the FB180SA10 come in?
It is listed in SOT227. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the FB180SA10?
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) | 100 V |
| Gate-Source Voltage (Vgs) | 20 V |
| Drain Current (Id) | 180 A |
| Drain-Source On-Resistance (Rds) | 0.0065 |
| Junction Temperature (Tj) | 150 °C |
| Package | SOT227 |
| Power Dissipation (Pd) | 480 W |
Equivalent & Replacement Parts
No verified equivalents are listed for FB180SA10 yet.