K3934 PDF Datasheet – 500V, 15A, N-ch, MOSFET – Toshiba

This post explains for the MOSFET.

The Part Number is K3934, 2SK3934.

The function of this semiconductor is 500V, 15A, N-Channel MOSFET.

The package is TO-220 Type

Manufacturer: Toshiba Semiconductor

Preview images :

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K3934 mosfet pinout


K3934 is Silicon N Channel MOS Type Field Effect Transistor(Metal Oxide Semiconductor Field Effect Transistor). This 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.



1. Low drain-source ON resistance: RDS (ON) = 0.23Ω (typ.)

2. High forward transfer admittance: |Yfs| =8.2 S (typ.)

3. Low leakage current: IDSS = 100 μA (VDS = 500 V)

4. Enhancement-mode: V th = 2.0~4.0 V (V DS = 10 V, ID = 1 mA)


Absolute Maximum Ratings (Ta = 25°C)

1. Drain to source voltage: VDSS = 500 V

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

3. Drain current: ID = 15 A

4. Drain Power Dissipation: Pd = 50 W

5. Channel temperature: Tch = 150 °C

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


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K3934 pdf transistor


1. Switching: N-channel MOSFETs are used as electronic switches in many applications due to their ability to handle relatively high currents and voltages.

2. Amplification: MOSFETs can also be used for amplification purposes in certain configurations.

3. Switching Regulator

K3934 PDF Datasheet

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