FTP08N06A MOSFET — Specifications & Equivalents

About the FTP08N06A

The FTP08N06A is a MOSFET with a drain–source voltage (V_DS) rating of 55 V and a continuous drain current (I_D) of 120 A. It can dissipate up to 230 W and is rated to a junction temperature of 175 °C. It is supplied in the TO220 package.

At a glance

• Type: MOSFET
• Max drain–source voltage (V_DS): 55 V
• Max continuous drain current (I_D): 120 A
• Power dissipation (P_D): 230 W
• Max junction temperature (T_J): 175 °C
• Package: TO220

Typical applications

With its 55 V drain–source rating the FTP08N06A sits in the low-voltage class of switching MOSFETs, typically found in 12 V and 24 V automotive and industrial rails, synchronous buck converters, load switching and reverse-polarity protection and H-bridges for small motors.

The 120 A current rating puts it in high-current territory, where conduction loss (I² × R_DS(on)) and thermal design usually matter more than switching loss. Budget for adequate copper area and a heatsink.

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 an output capacitance (C_oss) of 985 pF, which together with the gate drive determines switching loss and the practical upper frequency limit.

Choosing a replacement for the FTP08N06A

A drop-in substitute for the FTP08N06A should match its polarity and offer a drain–source rating of at least 55 V and a continuous drain current rating of at least 120 A.

Mechanically, check the replacement against the TO220 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 FTP08N06A?

The FTP08N06A is a MOSFET (metal-oxide-semiconductor field-effect transistor). It is rated for 55 V drain-source and 120 A continuous drain current.

What is the maximum voltage of the FTP08N06A?

The FTP08N06A has a maximum drain-source voltage (Vds) of 55 V. Treat this as an absolute maximum and design with margin, especially when switching inductive loads.

How much current can the FTP08N06A handle?

It is rated for 120 A of continuous drain current, with power dissipation limited to 230 W. Real-world capability depends on your heatsinking and ambient temperature.

What package does the FTP08N06A come in?

It is listed in TO220. Verify the pinout of the specific variant, as one outline can carry different pin assignments.

What can I use to replace the FTP08N06A?

This page lists 17 candidate equivalents matched on electrical ratings and package. Any replacement should meet or exceed the original voltage, current and dissipation figures and use a compatible drive level.