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Discussion in 'General Electronics Discussion' started by Rakesh Kumar, Jun 4, 2012.

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  1. Rakesh Kumar

    Rakesh Kumar

    5
    0
    Jun 4, 2012
    Sir,
    I'm very interested in electronics from my childhood and when i reached in class 8th, there was one question (in attachment) which always roaming in my mind. I ask many people and even search internet but not found the answer.

    Now, this is my first post to this forum and i hope i get the answer soon.

    I have more questions :confused: on the same topic after i get the first reply.

    So waiting for your replies....!!
     

    Attached Files:

  2. Harald Kapp

    Harald Kapp Moderator Moderator

    9,906
    2,098
    Nov 17, 2011
    Impossible to say from the photo. It is most probably a chip that is directly bonded to the PCB and sealed with a blob of epoxy.

    Harald
     
  3. CocaCola

    CocaCola

    3,635
    5
    Apr 7, 2012
  4. Rakesh Kumar

    Rakesh Kumar

    5
    0
    Jun 4, 2012
    I had seen many PCB that contain the same black hard material coated on them.
    What is actually under this black material.
     
  5. Rakesh Kumar

    Rakesh Kumar

    5
    0
    Jun 4, 2012
    Last edited by a moderator: Jun 4, 2012
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