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    Component identification

    Hi
    I cannot find any information on an sot-23 component. It is on a USB board. The markings are 23AX
    There is another sot-23 component next to this one and the markings are 1AM. I have found some information on this one but no information about substitutes
    If anyone has any ideas, please tell me.
    thanks so much
    Attached Files

    #2
    Hi,

    i've found this:

    Click image for larger version

Name:	Screenshot 2025-05-09 140949.png
Views:	81
Size:	10.7 KB
ID:	3633304

    Comment


      #3
      Most likely it's mosfet.

      Comment


        #4
        Originally posted by Robin21 View Post
        Hi,

        i've found this:

        Click image for larger version

Name:	Screenshot 2025-05-09 140949.png
Views:	81
Size:	10.7 KB
ID:	3633304
        И как в этой схеме будет играть эту роль MicroPower Microprocessor Reset?
        Attached Files

        Comment


          #5
          Originally posted by Robin21 View Post
          Hi,

          i've found this:

          Click image for larger version

Name:	Screenshot 2025-05-09 140949.png
Views:	81
Size:	10.7 KB
ID:	3633304
          Thanks but the markings are wong
          According to datasheet

          Comment


            #6
            Originally posted by lotas View Post
            Most likely it's mosfet.
            Seems so but which one and what substitute can I use
            Also what kind of scrap boards can these be found
            Thanks

            Comment


              #7
              Some google and using google translate
              I found
              si2301
              irlml6402

              Could these be the same

              Comment


                #8
                P- channel - AO3401, AO3407...

                Comment


                  #9
                  I found this
                  https://world.taobao.com/item/718073032302.htm

                  This shows it is si2301

                  Is si2301the same as or equivalent to AO3401, AO3407
                  Thanks

                  Comment


                    #10
                    It has a lower amperage, and what about yours, is it broken (all terminals are shorted)?

                    Comment


                      #11
                      Originally posted by lotas View Post
                      It has a lower amperage, and what about yours, is it broken (all terminals are shorted)?
                      It is connected to the USB port and the USB port current is very low

                      Comment


                        #12
                        So maybe the problem is not in it, what does the multimeter show on its terminals, what is the resistance between the terminals?

                        Comment


                          #13
                          Originally posted by lotas View Post
                          So maybe the problem is not in it, what does the multimeter show on its terminals, what is the resistance between the terminals?
                          I think it has a burn mark on it but I am trying to test

                          Comment

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