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  • Identify this chip

    Here's a picture of a chip from an electric train's power output board. (Not a model. An actual light rail train.) Can anyone identify the chip? (The documentation has long since been lost.)

    Dude, seriously, WHAT handkerchief?

    snooggums' density principal: "The more dense a population, the more dense a population."

    Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

  • #2
    Re: Identify this chip

    Hahahaha

    I thought this was going to be a joke thread, and the picture was going to be like this



    As for the chip, I have no idea. :D

    LINKS

    * *


    Stoop and you'll be stepped on; stand tall and you'll be shot at.

    -Carlos A. Urbizo-

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    • #3
      Re: Identify this chip

      Well it's a 307AAP3. What the heck that means I have yet to figure out...

      ~ Draken

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      • #4
        Re: Identify this chip

        There is a shop in town that would probably be able to figure it out if they could look a it in person. The place is called Circuit Specialists. They knew which capacitors I needed to replace the ones I accidentally broke off of my video card once.
        sigpic

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        • #5
          Re: Identify this chip

          Google knows the IC exists (and knows we're talking about it) but I didn't see any obvious data sheet links. Lots of Chinese sites seem to talk about it.

          Comment


          • #6
            Re: Identify this chip

            Originally posted by MagnaCentipede View Post
            Google knows the IC exists (and knows we're talking about it) but I didn't see any obvious data sheet links. Lots of Chinese sites seem to talk about it.
            Same issue I've spent almost a half hour looking a LOT of places want to sell these by the thousands, but don't tell what they would be good for...

            ~ Draken

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            • #7
              Re: Identify this chip

              The closest I found was a 14 pin IC with an analog switch, but it was using too many pins to fit in this 6 pin SOIC package.

              The company that made the train has gone through several acquisitions, each time losing engineering knowledge, and somewhere along the way all the documentation was lost. Alas, it seems corporate acquisitions are highly entropic. (The one I went through bled engineers pretty bad, including me.)

              This doesn't bode well for that maglev train being promulgated in this Sandbox thread:

              http://www.tacticalgamer.com/sandbox...eed-train.html
              Dude, seriously, WHAT handkerchief?

              snooggums' density principal: "The more dense a population, the more dense a population."

              Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

              Comment


              • #8
                Re: Identify this chip

                Found this resource:

                http://howto.wikia.com/wiki/Howto_id..._chip_packages

                Has logos that I'm looking through now.
                Dude, seriously, WHAT handkerchief?

                snooggums' density principal: "The more dense a population, the more dense a population."

                Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

                Comment


                • #9
                  Re: Identify this chip

                  More digging suggests that the QTC refers to Quaestus Corporation, which Fairchild acquired. This is probably an old optocoupler.

                  http://www.fairchildsemi.com/products/opto/index.html
                  Dude, seriously, WHAT handkerchief?

                  snooggums' density principal: "The more dense a population, the more dense a population."

                  Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

                  Comment


                  • #10
                    Re: Identify this chip

                    I see places to buy the 307AAP3 online, but no real information on what it actually is.
                    Diplomacy is the art of saying "good doggie" while looking for a bigger stick.

                    Comment


                    • #11
                      Re: Identify this chip

                      QTC made a line of optocouplers. QTC was bought up by Fairchild. The part in question is obsolete and no longer listed on Fairchild's website. I have queried them and their local reps to see if we can dig up the datasheet.

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                      • #12
                        Re: Identify this chip

                        Next step in the story.

                        Originally posted by From Fairchild
                        Subject
                        QTC307AAP3

                        Discussion Thread
                        Response (Kevin Emmons) 07/01/2008 12:13 PM
                        Dear Glenn,
                        Good afternoon. Fairchild sold that part of our LED business to Ever Light Co., a few years back. You will have to contact them for information regarding that device. The companies web site is: http://www.everlight.com/

                        Thank you,
                        Kevin
                        Fairchild Customer Support
                        Now I have a call into the Everlight people.

                        Comment


                        • #13
                          Re: Identify this chip

                          Is this relevant?
                          http://groups.google.com.ag/group/sc...cd16e422fcd575

                          Edit: Doh, your thread I believe.....
                          --
                          VI VI VI - the number of the beast

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                          • #14
                            Re: Identify this chip

                            Thanks, much, draeh!
                            Dude, seriously, WHAT handkerchief?

                            snooggums' density principal: "The more dense a population, the more dense a population."

                            Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

                            Comment


                            • #15
                              Re: Identify this chip

                              Yep, PanzerHans, that's my thread.
                              Dude, seriously, WHAT handkerchief?

                              snooggums' density principal: "The more dense a population, the more dense a population."

                              Iliana: "You're a great friend but if we're ever chased by zombies I'm tripping you."

                              Comment

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