FDB8444 FDB8444 is an N-Channel Power MOSFET from ON Semiconductor. It features a 40V drain-source voltage, 70A continuous drain current, and low 5.5mOhm on-resistance.
Mfr Part #:

FDB8444

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
FDB8444 is an N-Channel Power MOSFET from ON Semiconductor. It features a 40V drain-source voltage, 70A continuous drain current, and low 5.5mOhm on-resistance.
✓ Total Stock: 31,200 pcs

FDB8444 Available from 1 distributor

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FDB8444 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Drain to Source Voltage (Vdss)
Drive Voltage (Max Rds On, Min Rds On)
FET Type
Gate Charge (Qg) (Max) @ Vgs
Input Capacitance (Ciss) (Max) @ Vds
Lead Style
Mounting Type
Operating Temperature
Power Dissipation (Max)
Rds On (Max) @ Id, Vgs
Supplier Device Package
Tape & Reel
Technology
Vgs (Max)
Vgs(th) (Max) @ Id

FDB8444 Description

Short technical summary and product information.

The FDB8444 is an N-Channel Power MOSFET manufactured by ON Semiconductor. It is designed for high-efficiency power switching applications.

 

This MOSFET offers a drain-source voltage rating of 40V and a continuous drain current of 70A. The typical on-resistance is 5.5mOhm at 10V gate drive, enabling low conduction losses. The device features a maximum gate charge of 128nC and an input capacitance of 8035pF, factors that influence switching speed and gate drive requirements.

 

The FDB8444 is housed in a surface-mount D²PAK (TO-263) package, suitable for automated assembly. It operates over a junction temperature range of -55°C to 175°C, with a maximum power dissipation of 167W.

FDB8444 Quick Information

Product Type: MOSFET (Metal Oxide)
Canonical Name: FDB8444 N-Channel MOSFET 40V 70A TO-263AB
Subcategory: Single MOSFET

FDB8444 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FDB8444 Features

  • N-Channel Power MOSFET with 40V drain voltage.
  • Continuous drain current rating of 70A.
  • Low on-resistance of 5.5mOhm at 10V gate drive.
  • Surface-mount D²PAK (TO-263) package.
  • RoHS3 and REACH compliant.

FDB8444 Applications

  • Ideal for high-efficiency DC-DC converters.
  • Used in motor control and power management.
  • Suitable for automotive power switching circuits.
  • Applicable in battery protection and load switching.

FDB8444 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum drain-source voltage of the FDB8444?

The FDB8444 has a maximum drain-source voltage of 40V.

What is the continuous drain current rating?

The continuous drain current is 70A at case temperature (Tc).

What is the on-resistance of the FDB8444?

The maximum on-resistance is 5.5mOhm at 70A drain current and 10V gate-source voltage.

What package type is the FDB8444 available in?

It is offered in a D²PAK (TO-263) surface-mount package.

What is the operating temperature range?

The junction operating temperature range is -55°C to 175°C.

Is the FDB8444 RoHS compliant?

The part is listed as RoHS3 compliant, but this is unverified. It is advisable to confirm with the manufacturer.

What is the maximum power dissipation?

The maximum power dissipation is 167W at case temperature (Tc).

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