SM-R180 Samsung Galaxy Buds Help Identifying component in charging circuit.

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  • ecolaptop
    Member
    • Jan 2022
    • 10
    • UK

    #1

    SM-R180 Samsung Galaxy Buds Help Identifying component in charging circuit.

    Hi.
    Could anyone have some hart and pity to help me identify this transistor? I believe this is a transistor but who knows... .
    When it was in I had no ground on charging pins of actual earbuds. When unsoldered ground came back and now it is charging itself, it is charging earbuds as well and that did not happen before.
    When I test it it don't look like transistor but like double diode leg 2(middle - possibly emitter) to 1 and 2 to 3 connected showing 0.8 volt drop, in reverse it is open circuit and across 1 to 2 both directions it is open circuit.
    Is this a double diode or transistor that failed somehow? I'm stupid enough to know that don't know...
    Part is marked first line of text on it 8691 and 2nd line 007
    it is of 4x3.2x1.5 mm in size and obviously it has 3 legs coming out of it.
    Please look at attached pictures
    Hope they will help
    I hope to be schooled by somebody with what it is and what I can put in there and how bad it is to leave it without.
    Thank you for your time
    I hope I did post it correctly lol if not sorry please let me know...
    Stay safe
    Attached Files
  • mon2
    Badcaps Legend
    • Dec 2019
    • 14004
    • Canada

    #2
    Re: SM-R180 Samsung Galaxy Buds Help Identifying component in charging circuit.

    Perhaps this part?

    https://www.magntek.com.cn/en/list/163/515.htm

    Comment

    • ecolaptop
      Member
      • Jan 2022
      • 10
      • UK

      #3
      Re: SM-R180 Samsung Galaxy Buds Help Identifying component in charging circuit.

      Originally posted by mon2
      Hi thank you, this looks very interesting. Do you think the one I have is faulty as I do?
      The more i look at it the more sense it makes, if I'm not wrong this is like a user protection to stop user from shorting the circuit when there is no earbuds in the case , when they are in there sensor kick in and allows V and Ground to be there charging earbuds.
      OR AM I STUPID? lol.
      Last edited by ecolaptop; 02-06-2023, 07:45 AM.

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