This is one of the types of MOSFETs and is a kind of transistor.
Part Number: 2SK4145, 2SK4145-S19-AY
Function: Switching N-Channel Power MOSFET
Package: TO-220 Type
Manufacturer: NEC
Image
Description
This is 60V, 84A, N-Channel Power MOSFET. The K4145 is a high-current N-channel power MOSFET optimized for low-loss switching applications. It is particularly suitable for power conversion systems, motor control, and high-efficiency switching designs due to its low RDS(on) and high current capability.
Features
1. Low on-state resistance : RDS(on)= 10 mΩMAX. (VGS= 10 V, ID= 42 A)
2. Low input capacitance : Ciss= 5300 pF TYP.
3. N-channel enhancement-mode MOSFET
4. High drain current capability (up to 84A)
Pinout
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to Source Voltage (VGS= 0 V) : VDSS = 60 V
2. Gate to Source Voltage (VDS= 0 V) : VGSS = ±20 V
3. Drain Current (DC) (TC= 25°C) : ID(DC) = ±84 A
4. Total Power Dissipation (TC= 25°C) : PT1 = 84 W
5. Total Power Dissipation (TA= 25°C) : PT2: = 1.5 W
6. Channel Temperature : Tch = 150 °C
7. Storage Temperature : Tstg = −55 to +150 °C
8. Single Avalanche Current : IAS= 32 A
9. Single Avalanche Energy : EAS = 102 mJ
Typical Applications
- Switch Mode Power Supplies (SMPS)
- DC-DC converters
- Motor drivers
- Battery-powered systems
- Load switching (high current)
- Automotive electronics
Alternative / Equivalent Devices
- IRLZ44N (logic-level alternative, lower current)
- IRF3205 (55V, high current MOSFET)
- AOI518 / AOZ series (modern low RDS(on) MOSFETs)
- FDB7030BL (low resistance, high efficiency)
K4145 Datasheet
