This post explains for the MOSFET.
The Part Number is APM2518NU.
The function of this semiconductor is 25V, 50A, N-Channel Enhancement Mode MOSFET.
The package is TO-252 Type
Manufacturer: Anpec Electronics Coropration
Preview images :
Description
Features:
1. 25V/50A,
(1) RDS(ON) =8mW (Typ.) @ VGS =10V
(2) RDS(ON) =15mW (Typ.) @ VGS =4.5V
2. Super High Dense Cell Design
3. Reliable and Rugged
4. Avalanche Rated
5. Lead Free and Green Devices Available (RoHS Compliant)
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Applications:
1. Power Management in Desktop Computer or DC/DC Converters