MDD5N40 PDF – 400V, 3.4A, N-Channel MOSFET

Part Number: MDD5N40

Function: 400V, 3.4A, N-Channel MOSFET

Package: D-Pak, L-Pak Type

Manufacturer: MagnaChip

Images:MDD5N40 pdf pinout


The MDI5N40 / MDD5N40 use advanced Magnachip’s MOSFET Technology, which provides low on-state resistance, high switching performance and excellent quality. MDI5N40 is suitable device for SMPS, HID and general purpose applications.

An N-channel MOSFET (Metal Oxide Semiconductor Field Effect Transistor) is a type of field effect transistor (FET) that uses an N-type semiconductor material as the conducting channel to control the flow of current.

When a positive voltage is applied to the gate terminal, it attracts electrons to the channel, creating an inversion layer and allowing current to flow between the source and drain terminals.

N-channel MOSFETs are widely used in a variety of electronic applications due to their high input impedance, fast switching speeds, and low power consumption. They are commonly used as switches, amplifiers, and voltage regulators.


1. VDS = 400V

2. ID = 3.4A @VGS = 10V

3. RDS(ON) ≤ 1.6Ω @VGS = 10V

MDD5N40 datasheet mosfet

Absolute Maximum Ratings (Ta = 25°C)

1. Drain to source voltage: VDSS = 400 V

2. Gate to source voltage: VGSS = ± 30 V

3. Drain current: ID = 3.4 A

4. Power Dissipation: Pd = 45 W

5. Avalanche energy: Ear = 4.5 mJ

6. Channel temperature: Tch = 150 °C

7. Storage temperature: Tstg = -55 to +150 °C



1. Power Supply

2. PFC

3. Ballast

MDD5N40 PDF Datasheet