This is one of the types of MOSFETs and is a kind of transistor.
Part Number: K3918, 2SK3918
Function: MOS Field Effect Transistor
Package: TO-252 Type
The K3918 is N-channel MOS FET device that features a low on-state resistance and excellent switching characteristics, and designed for low voltage high current applications such as DC/DC converter with synchronous rectifier.
1. Low on-state resistance : RDS(on)1 = 7.5 mΩ MAX. (VGS = 10 V, ID = 24 A)
2. Low Ciss: Ciss = 1300 pF TYP.
3. 5 V drive available
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 25 V
2. Gate to source voltage: VGSS = ± 20 V
3. Drain current: ID = ± 48 A
4. Drain power dissipation : PD = 1.0 W
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C