This post explains for the MOSFET.
The Part Number is MP3401A.
The function of this semiconductor is -30V, -3A, P-Channel MOSFET.
The package is SOT-23 Type
Manufacturer: Major Power Technology
Preview images :
The MP3401A is -30V, -3A, P-Channel Enhancement Mode MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor).
(1) RDS(ON)=46mΩ (typ.) @ VGS=-10V
(2) RDS(ON)=55mΩ (typ.) @ VGS=-4.5V
(3) RDS(ON)=79mΩ (typ.) @ VGS=-2.5V
2. Super High Dense Cell Design
3. Reliable and Rugged
4. Enhance ESD Cell Protection
5. Lead Free and Green Devices Available (RoHS Compliant)
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = – 30 V
2. Gate to source voltage: VGSS = ± 10 V
3. Drain current: ID = – 3 A
4. Maximum Power Dissipation: Pd = 0.83 W (Tc = 25°C)
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
1. Power Management in LCD TV, Monitor, Notebook Computer
2. Portable Equipment and Battery Powered Systems