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Need help identifying this component ...

Discussion in 'General Electronics Discussion' started by SteveB, Jun 11, 2015.

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  1. SteveB

    SteveB

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    Jun 11, 2015
    Hello All,

    On the attached photo ....
    pcb.jpg

    ... can anyone identify what the components label N1475 are? They soldered to the board and neither my friend nor I have any idea what they are.

    Thanks,

    Steve
     
  2. Martaine2005

    Martaine2005

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    May 12, 2015
    Hi, they could be resistor networks.
     
    davenn likes this.
  3. AnalogKid

    AnalogKid

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    Jun 10, 2015
    Crystal ball is out for repairs. Who makes the board, what does it do, and what kinds of signals are on the connector to the right? Or, schematic.

    ak
     
  4. SteveB

    SteveB

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    Jun 11, 2015
    I believe they are exactly that ... resistor ladders or resistor networks. The board is an automotive ECU that is non-functional. Trying to restore function on an ECU that is out of production ... older car ... 1995 Ferrari. As you know, automotive ECUs perform many analog to digital and digital to analog conversions. Makes sense that resistor networks are employed.

    Regards,

    Steve
     
  5. Martaine2005

    Martaine2005

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    May 12, 2015
    I am not 100% sure they are resistor networks, except they look very similar. I couldn't find any reference to the markings.
    I even checked the LOGO resourse section on this forum.
    Somebody on here will know for sure..

    If they are, I can make you some for Ferrari prices of course..:)
     
  6. SteveB

    SteveB

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    0
    Jun 11, 2015
    It is a 20 yr old ferrari ... Worth only $25k in current condition. This is not the car, photo from Wikipedia. But looks similar.

    [​IMG]

    Hopefully get it back to running condition and clean it up and maybe worth $50k. So it is not one of those really high dollar F cars. So could you make some for toyota prices?

    Steve
     
  7. Martaine2005

    Martaine2005

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    May 12, 2015
    I could......But Toyota ones don't work on Ferrari's...:rolleyes:
    Lovely looking cars.

    I hope you can revive this beauty..
    Martin.
     
  8. Arouse1973

    Arouse1973 Adam

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    Dec 18, 2013
    Vishay resistor network. 475 could be 4700K but some of Vishay's networks have part number not related at all to their value. I'll have a look.
    Cheers
    Adam
     
    Martaine2005 likes this.
  9. Martaine2005

    Martaine2005

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    May 12, 2015
    There you go steveb. An expert has told you.
     
  10. Martaine2005

    Martaine2005

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    May 12, 2015
    Oops, forgot to say the ' Ex Spurt' will give you the info on those......:cool:
     
  11. Arouse1973

    Arouse1973 Adam

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    Dec 18, 2013
    Um... can't find that part number on Vishay's website. Got me thinking it might even be a capacitor network, but they normally have a tolerance letter like "K" after the value.... but this doesn't have that. So it might be a special.... Might be an idea to measure across some of the pins with an Ohm meter and see if you get any reading.
    Adam
     
  12. Arouse1973

    Arouse1973 Adam

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    Dec 18, 2013
    LOL, you do make me Laugh Martina :)
    Adam
     
    Martaine2005 likes this.
  13. Martaine2005

    Martaine2005

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    May 12, 2015
    Hmm......Martin....masculine.
     
    Arouse1973 likes this.
  14. AnalogKid

    AnalogKid

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    715
    Jun 10, 2015
    Probably not. The 6800 has an 8-channel 8-bit A/D and two PWM channels on board. They could be a custom hybrid protection circuits, attenuating 12 V signals to 5 V for compatibility with the uC, plus noise and transient suppression, lowpass filtering, etc.

    ak
     
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