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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

    Jun 4, 2012
    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

    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.

  3. CocaCola


    Apr 7, 2012
  4. Rakesh Kumar

    Rakesh Kumar

    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

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