need help identifying fried smd component

Discussion in 'General Electronics Chat' started by elmi, Jun 3, 2010.

  1. elmi

    Thread Starter New Member

    Jun 3, 2010
    3
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    I need help identifying the component shown below.
    It's close to the DC power input of a MP3 recorder Zoom H2N.
    It got fried when connected to a too high input voltage.
    The last two letters look like "AW" to me, the rest is unreadable.
    Thanks in advance,
    Michael
     
  2. oidium45

    Active Member

    Apr 24, 2010
    130
    8
    I would recommend contacting the manufacturer and requesting a circuit diagragm. You may get lucky.
     
  3. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    760
    seems to be a MOSFET
     
  4. sashijoseph

    New Member

    Jun 29, 2006
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    Looks like a 6-pin chip.
    Can you identify the Vcc and Gnd pins?
     
  5. retched

    AAC Fanatic!

    Dec 5, 2009
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    I would get the 'non-exploding' type next time. ;)

    It could be an opto. but then again.. It appears the center pin may be connected to GND.
    MOSFET..I think your on to something Rifaa.

    Hrm...
     
  6. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    I usually am right when it comes to blowing MOSFET's :D..

    If he could show me the surrounding I can make it out?
     
  7. elmi

    Thread Starter New Member

    Jun 3, 2010
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    OK, here comes the bigger picture with the surroundings.
    I had hoped the few readable letters on the component are sufficient; I didn't find the code in any of the internet SMD tables.

    Thanks in advance.
     
  8. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Look at the pic
     
    • MP-3.jpg
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  9. elmi

    Thread Starter New Member

    Jun 3, 2010
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    Sorry for not responding so long, I had to travel. Please find the closeup attached.
    I think that the black plastic piece on top of the image is glued on top of the IC to isolate two large solder points beneath it from a flat band cable that is on top of it when the device box is closed.
     
  10. timrobbins

    Active Member

    Aug 29, 2009
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    You did check all the other devices on the pcb to see if any were the same???

    Ciao, Tim
     
  11. tom66

    Senior Member

    May 9, 2009
    2,613
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    I'm assuming it's some kind of regulator. Most likely, it's a linear regulator. It can't be a MOSFET, because the reference designator says "IC1".

    Looks like pin 1 is grounded.
    Looks like pin 2 goes to some control (ON/OFF, SHUTDOWN?)
    Looks like pin 3 comes out from a transistor Q3, probably a bipolar or MOSFET, I'm making a guess that it's connected to the emitter or source, so this looks like some kind of control or perhaps it only gets switched on when the power connector is present(?) Can you snap a closer shot of the transistor Q3? It's also possible this is the output, and the transistor controls whether the other components get the regulated voltage or the battery voltage (if it is battery powered).
    Looks like pin 4 goes to ground.
    Looks like pin 5 is the input.
     
  12. sage.radachowsky

    Member

    May 11, 2010
    241
    38
    What a blowout! I didn't know BP made electronic components too.

    It is a SOT23-5 package -- a 5-pin IC.

    Pin 2 looks like connected to ground.

    Looks pretty clear that it says _NAW... do you see the "N" there?

    Isn't there a website that lists a lot of components by the markings?

    Sage
     
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