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IV curve of a BD-5 tunnel diode

  1. Dec 18, 2008 #1
    Hi All

    Anyone know where I might find the IV curve for a General Electric BD-5 tunnel diode? I have found a few short datasheets for the BD series, but I really need a curve.

    Does anyone know where to find such a thing? Or should I just get the SourceMeter out and make one myself.

    Thanks
    Jack
     
  2. jcsd
  3. Dec 19, 2008 #2

    berkeman

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    Staff: Mentor

    I googled BD-5 tunnel diode, and got some hits. Here's one with a sketch of the curve:

    http://www.phys.ufl.edu/REU/1999/reports/tyner/tyner.htm

    from a report on some research.

    It may be the most effective like you say to just sweep out the curve yourself. If you're in Silicon Valley, I have a curve tracer next to my lab bench that I could let you use....
     
  4. Dec 22, 2008 #3
    Hi Berkeman

    Sorry for the delay in replying, I ended up travelling home for christmas, so no internet.

    Cheers for looking, but that doesn't really have the detail I need. And I'm a few thousand miles too far east to take up your generous offer to lend a curve tracer. I managed to borrow a good Keithley SourceMeter, so I'll just do the measurements back at the lab.

    Thanks anyway
    Jack
     
  5. Dec 23, 2008 #4
    Side note: One of my first assignments at my work was sweep out the I-V curves for several zener diodes. We didn't have a curve tracer readily available, so I had to build a test jig using only a power supply and a resistor.
     
  6. Apr 2, 2009 #5
    EDIT: OK, so I was replying to a post pushing some curvefitting software, which got deleted as spam, but I'll leave my post here as the info may be useful.
    ====================================================

    Ignoring the fact that this thread has been dead for months, and the fact that a lorentzian fit to a badly-sketched curve without any values on it would be about as much use as a water soluble lifeboat, I do now have some useful data.

    For anyone who's interested I did take appropriate data back in February. I thought I'd make it available to anyone who's searching the web for it.
    I've attatched rough IV plots of two BD5 diodes and a BD4 diode, measured with a sourcemeter at room temperature. Usual disclamers apply (not all the diodes are the same, for all you know I'm incompetent etc. etc.)

    Cheers
    Jack
     

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