IRFIZ48V MOSFET — Specifications & Equivalents
Manufacturer: Commonly produced by International Rectifier (now Infineon)
About the IRFIZ48V
The IRFIZ48V is an N-channel MOSFET with a drain–source voltage (VDS) rating of 60 V, a continuous drain current (ID) of 39 A and an on-resistance (RDS(on)) of 0.012 Ω. It can dissipate up to 43 W and is rated to a junction temperature of 175 °C. It is supplied in the TO220FP package.
At a glance
- Type: N-channel MOSFET
- Max drain–source voltage (VDS): 60 V
- Max continuous drain current (ID): 39 A
- On-resistance (RDS(on)): 0.012 Ω
- Power dissipation (PD): 43 W
- Max junction temperature (TJ): 175 °C
- Package: TO220FP
- Manufacturer: Commonly produced by International Rectifier (now Infineon)
Typical applications
With its 60 V drain–source rating the IRFIZ48V 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 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 200 ns and an output capacitance (Coss) of 496 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.
Choosing a replacement for the IRFIZ48V
A drop-in substitute for the IRFIZ48V must be the same N-channel type and offer a drain–source rating of at least 60 V, a continuous drain current rating of at least 39 A and an on-resistance no higher than 0.012 Ω if efficiency and heat matter.
Mechanically, check the replacement against the TO220FP 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 IRFIZ48V?
The IRFIZ48V is an N-channel MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 60 V drain-source and 39 A continuous drain current.
What is the maximum voltage of the IRFIZ48V?
The IRFIZ48V has a maximum drain-source voltage (Vds) of 60 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.
How much current can the IRFIZ48V handle?
It is rated for 39 A of continuous drain current, with power dissipation limited to 43 W. Real-world capability depends on your heatsinking and ambient temperature.
What is the on-resistance of the IRFIZ48V?
On-resistance (Rds(on)) is 0.012 Ω. Multiply by the square of your load current to estimate conduction loss.
What package does the IRFIZ48V come in?
It is listed in TO220FP. Verify the pinout of the specific variant, as one outline can carry different pin assignments.
What can I use to replace the IRFIZ48V?
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) | 60 V |
| Gate-Source Voltage (Vgs) | 20 V |
| Drain Current (Id) | 39 A |
| Drain-Source On-Resistance (Rds) | 0.012 |
| Rise Time (tr) | 200 nS |
| Output Capacitance (Coss) | 496 pF |
| Junction Temperature (Tj) | 175 °C |
| Package | TO220FP |
| Power Dissipation (Pd) | 43 W |
Equivalent & Replacement Parts
No verified equivalents are listed for IRFIZ48V yet.