This post explains for the MOSFET.
The Part Number is K4145, 2SK4145.
The function of this semiconductor is N-Channel 60V, 84A, MOSFET.
The package is TO-220 Type
Manufacturer: NEC
Preview images :
Description
The K4145 is 60V, 84A, N-channel MOS 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.
Features
1. Low on-state resistance : RDS(on) = 10 mΩ MAX. (VGS = 10 V, ID = 42 A)
2. Low input capacitance : Ciss = 5300 pF TYP.
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 60 V
2. Gate to source voltage: VGSS = ± 20 V
3. Drain current: ID = ± 84 A (Tc = 25°C)
4. Total Power Dissipation : Pt = 84 W (Tc = 25°C)
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
Applications:
1. High Current Switching