K4115 PDF Datasheet – 900V, 7A, N-ch MOSFET – Toshiba

This post explains for the MOSFET.

The Part Number is K4115, 2SK4115.

The function of this semiconductor is 900V, 7A, N-channel MOSFET.

The package is TO-3P Type

Manufacturer: Toshiba Semiconductor

Preview images :

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K4115 pdf pinout


K4115 is Silicon N-Channel MOS Type Field Effect Transistor.

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. Low drain-source ON resistance: RDS (ON) = 1.6 Ω (typ.)

2. High forward transfer admittance: ⎪Yfs⎪ = 5.0 S (typ.)

3. Low leakage current: IDSS = 100 μA (max) (VDS = 720 V)

4. Enhancement model: Vth = 2.0~4.0 V (VDS = 10 V, ID = 1 mA)



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K4115 datasheet mosfet

Absolute Maximum Ratings (Ta = 25°C)

1. Drain to source voltage: VDSS = 900 V

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

3. Drain current: ID = 7 A

4. Drain Power Dissipation: Pd = 150 W

5. Channel temperature: Tch = 150 °C

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


1. Switching Regulator

K4115 PDF Datasheet