There are 4 type of mosfet’s on laptop motherboard
3.Dual N-chanel mosfet
4.Dual P-chanel mosfet
We Can identify P-chanel OR N-chanel mosfet with different marking code.
Easy way to identified look at the ending number of marking code .
For example :
AO4435 look at end of marking code number is odd numbers ( 3 ).
this is P-channel mosfet
example : AO 4407 (7) is odd number ,this is P-channel too,
they could be substitute each other even different manufacture and code.
Others P-chanel examples : AON7403, AON7423, Si4835DDY, 3423-FDS ETC
Conclusion : Mosfet which have last odd numbers (1,3,5,7,9) they are all P-Channels.
Other example : AON6414A
look at last number of marking code it is even (4) numbers it’s mean this is N-channel mosfet and they could replace by other N-channel even different manufacture and code.
Others N-channel mosfet examples:
AO4800, AON7404, AON7410, AON7528 ETC
Conclusion : Mosfet which have last Even numbers (0,2,4,6,8) they are all N-Channels.