Need help to identify SMD

Discussion in 'General Electronics Chat' started by ARSiq, Nov 23, 2012.

  1. ARSiq

    Thread Starter New Member

    Nov 23, 2012
    9
    2
    Hi.
    Please i need your help to identify this SMD component. Im sure is it a kind of MOSFET, but i need to know if it is P or N channel.
    Marking on it says:
    B20
    P03
    ECA3126
    I searched it for hours, but no luck, did not even find out manufacter. Looks like noone knows that logo.
    TIA
     
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  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    Is this from an ASUS netbook? If it is, then which model? If it isn't , then where is it from? Why do you think it's a Mosfet?
    Can you take a better picture ? The logo looks like a "μ" with a small "o".

    Does it have an big exposed pad on the back?
     
    Last edited: Nov 23, 2012
  3. ARSiq

    Thread Starter New Member

    Nov 23, 2012
    9
    2
    Yes it is from ASUS K50AF placed near power suply conector. There are two of them.
    There is no big exposed pad on back.
    I try make better picture. The logo is like M, but not with V in middle but a U.
    I think is it MOSFT, because in most notebooks they are in this place. And on PCB are only 3 pads. 4 pins on one side are together, on other one single pin and last 3 together. So im sure is it an transistor.
     
    Last edited: Nov 23, 2012
  4. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    ARSiq likes this.
  5. ARSiq

    Thread Starter New Member

    Nov 23, 2012
    9
    2
    Pins 1,2,3 are sorted, making one pin on board, pin 4 is alone and pins 5,6,7,8 are sorted making one pin on board. That is what make me think is it a transistor.
    Something like this http://www.aosmd.com/pdfs/datasheet/AO4452.pdf
    Thanks for the page with logos, this logo is not there. Maybe some new manufacter.
     
  6. ARSiq

    Thread Starter New Member

    Nov 23, 2012
    9
    2
    Problem solved.
    Have no idea what it is, but it can be replaced with P-Channel Enhancement Mode FET AO4407 from AlphaOmega.
    Im not proud of way how i maked it, but it works :)

    4407 datasheet http://www.aosmd.com/res/data_sheets/AO4407.pdf
     
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