This post explains for the MOSFET.
The Part Number is AP2761I-A.
The function of this semiconductor is 650V, 10A, N-Channel MOSFET.
Manufacturer: Advanced Power Electronics
Preview images :
The 2761I-A series are specially designed as main switching devices for universal 90~265VAC off-line AC/DC converter applications.
TO-220CFM type provide high blocking voltage to overcome voltage surge and sag in the toughest power system with the best combination of fast switching,ruggedized design and cost-effectiveness.
1. Repetitive Avalanche Rated
2. Fast Switching
3. Simple Drive Requirement
4. RoHS Compliant