MDHT4N20Y PDF Datasheet – 200V, 0.85A, N-Ch, MOSFET

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.

Part Number: MDHT4N20Y

Function: 200V, 0.85A, N-Channel MOSFET

Package: SOT-223 Type

Manufacturer: MagnaChip

Images:MDHT4N20Y pdf pinout


The MDHT4N20Y uses advanced Magnachip’s MOSFET Technology, which provides low on-state resistance, high switching performance and excellent quality. This MOSFET is suitable device for LED TV and general purpose applications.



1. VDS = 200V

2. ID = 0.85A

3.  RDS(ON) ≤ 1.35Ω

MDHT4N20Y datasheet mosfet

Absolute Maximum Ratings (Ta = 25°C)

1. Drain to source voltage: VDSS = 200 V

2. Gate to source voltage: VGSS = ± 20 V

3. Drain current: ID = 0.85 A

4. Total Power Dissipation: Pd = 2.1 W

5. Channel temperature: Tch = 150 °C

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


1. Power Supply

2. PFC


MDHT4N20Y PDF Datasheet