MOSFETS on Laptop Motherboard
Types of MOSFETs: There are 4 types of mosfet (SO8 package) on laptop motherboard P-channel mosfet N-channel mosfet Dual P-channel mosfet Dual N-channel mosfet Each type could be substituted as long as they are of the same type even with different marking code. How to identify Mosfet's type: Easiest way is to look at the end number of the marking code. If it ends in odd number, that means it is a P-channel MOSFET. If it is even number, it is an N-channel MOSFET. Examples: 4433 Look at end code number (3), it is odd number so this is P-channel. 4407 This also ends in odd number (7), so this is P-channel too. They could be substituted to each other even they have different manufacturer and code. 4466 This MOSFET ends in 6 so this is an N-Channel type. 8884 This ends in 4 which is an even number, an indication that this is an N-type MOSFET.