FQU5N40TU The FQU5N40TU is an N-Channel MOSFET from On Semiconductor in a through-hole I-PAK package. It offers a 400V drain-source voltage rating and 3.4A continuous drain current.
Mfr Part #:

FQU5N40TU

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
The FQU5N40TU is an N-Channel MOSFET from On Semiconductor in a through-hole I-PAK package. It offers a 400V drain-source voltage rating and 3.4A continuous drain current.
✓ Total Stock: 7,188 pcs
$ Price Range: $0.56

FQU5N40TU Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
5,091 pcs
5091 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
2,097 pcs
2097 pcs On Request 1 On Request On Request 10+ On Request On Request

FQU5N40TU Specifications Quick View

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

FQU5N40TU Description

Short technical summary and product information.

The FQU5N40TU is an N-Channel MOSFET manufactured by On Semiconductor. It is designed for high-voltage switching applications and provides a drain-source voltage rating of 400 V and continuous drain current of 3.4 A at Tc. The device has a maximum on-resistance of 1.6 Ω at a gate drive voltage of 10 V, enabling efficient power handling.

 

This MOSFET features a maximum gate threshold voltage of 5 V and supports a gate-source voltage range of ±30 V. Operating junction temperature range is -55°C to 150°C, and maximum power dissipation is 45 W at case temperature (Tc) and 2.5 W at ambient temperature (Ta). With 13 nC total gate charge and 460 pF input capacitance, it is suited for moderate-frequency switching.

 

The device is available in a TO-251-3 (I-PAK) through-hole package, which aids in thermal dissipation and simplifies board assembly. It is listed as RoHS3 compliant and has an MSL rating of 1, allowing unlimited floor life. The FQU5N40TU is appropriate for general-purpose high-voltage power switching circuits requiring a 400 V blocking voltage and 3.4 A current capability.

FQU5N40TU Quick Information

Product Type: MOSFET
Series: QFET
Canonical Name: N-Channel MOSFET, 400V, 3.4A, I-PAK
Subcategory: Single N-Channel MOSFET

FQU5N40TU Compliance

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

FQU5N40TU Estimated Pricing

Qty Low High
535+ $0.56 $0.56

Estimated market price range - modelled values for guidance only, not live distributor offers.

FQU5N40TU Features

  • Supports 400V drain-source voltage.
  • Handles 3.4A continuous drain current.
  • Max on-resistance is 1.6Ω at 10V.
  • Through-hole I-PAK package simplifies assembly.
  • RoHS3 compliant with MSL 1.

FQU5N40TU Applications

  • Ideal for high-voltage power switching.
  • Suited for through-hole power boards.
  • Good for moderate-current switching tasks.

FQU5N40TU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the drain-to-source voltage rating of the FQU5N40TU?

The maximum drain-source voltage is 400 V.

What package is the FQU5N40TU available in?

It is available in a TO-251-3 (I-PAK) through-hole package.

What is the operating junction temperature range?

The operating junction temperature range is -55°C to 150°C.

Is the FQU5N40TU RoHS compliant?

Yes, it is listed as RoHS3 compliant.

What continuous drain current can the FQU5N40TU handle?

It supports 3.4 A of continuous drain current at Tc.

What is the maximum on-resistance of the FQU5N40TU?

The maximum on-resistance is 1.6 Ω at Vgs=10V and Id=1.7A.

What is the maximum power dissipation of the FQU5N40TU?

Maximum power dissipation is 45 W at case temperature and 2.5 W at ambient temperature.

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