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Source for transistor outline dimensions needed

Discussion in 'Electronic Repair' started by hr(bob) [email protected], Mar 29, 2009.

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  1. hr(bob)

    hr(bob) Guest

    Can anyone give me an address for a source that gives the dimensions
    of various transistor cases, TO-5, etc? I struck out using Google.

    Bob Hofmann
     
  2. hr(bob)

    hr(bob) Guest

    Hi Dave:

    I tried everything I could think of, I'm not sure who sets the
    standards, and I am an IEEE member and then some. Yes, I use
    "asdhjkfashjdf" frequently.

    Bob H
     
  3. Rich Webb

    Rich Webb Guest

    That would be JEDEC Publication 95. The sections are available for
    download after registration. http://www.jedec.org
     
  4. Dayum!

    I tried every trick I could think of:

    "standard semiconductor packages" *
    "standard transistor outlines"
    "transistor outlines"
    to-3 to-220
    ieee iso

    and a bunch more. Nada. Zip. Zero.

    Who the hell is the keeper of those standards? I woulda thought it would
    be an ISO standard, or perhaps IEEE.


    * By the way, you do know, don't you, that you can tightly restrict a
    Google search by putting the search phrase in quotes, right?


    --
    Made From Pears: Pretty good chance that the product is at least
    mostly pears.
    Made With Pears: Pretty good chance that pears will be detectable in
    the product.
    Contains Pears: One pear seed per multiple tons of product.

    (with apologies to Dorothy L. Sayers)
     
  5. Googling for "jedec transistor dimensions TO-5"
    gave me e.g. this

    http://www.tpub.com/content/MIL-SPEC/MIL-S/MIL-S-19500-69E/MIL-S-19500-69E00003.htm

    They give a drawing with dimensions of TO-5. I guess that most,
    if not all, of case types can be found out that way. Any drawbacks?

    Regards,
    H.
     
  6. Baron

    Baron Guest

    Don't the device manufacturers give that information ?
     
  7. Eeyore

    Eeyore Guest

    Yes, get a data sheet for one. The major semi manufacturers all publish
    detailed dimensions.

    Graham
     
  8. Eeyore

    Eeyore Guest

    What device are you using ? Try using some common sense.

    Graham
     
  9. Eeyore

    Eeyore Guest

    They do. Usually on the data sheet of the device in question.

    Graham
     
  10. hr(bob)

    hr(bob) Guest

    I have a number of known good, but unknown types of transistors,
    scrapped from working electronics that I did not want to keep or pass
    on to Goodwill. I googled on the codes on the transistors, but got
    too many replies. I thought if I could figure out which TO-XXX the
    cases were, I would narrow my search somewhat. I don't know the case
    sizes by just looking at them as I normally do not worry about the TO-
    XXX case when replacing known transistors. I will try the JEDEC site.

    Bob Hofmann
     
  11. hr(bob)

    hr(bob) Guest

    I went there, 18000 pages. I just want outlines for commonly used
    transistors in tv sets.

    Bob Hofmann
     
  12. I am located far from the problem, but from what I have read in the last
    few years, Goodwill and similar organizations have become the dumping ground
    for unusable, unrepairable, electronic trash which costs them money to recycle.

    Many of them have stopped accepting anything electronic that can not be
    sold for enough money to cover the cost of legally getting rid of the parts
    that come with it that are of no value.

    Quite simply, unless you are willing to volunteer the time to sort it for
    them and dispose of the nonsaleable stuff, the only sane policy is to
    refuse any donations of electronics.

    Geoff.
     
  13. Eeyore

    Eeyore Guest

    There are only a few relatively popular ones. Some Japanese or European
    devices may have non-JEDEC specified cases. And some manufacturers, notably
    Motorola at one time had 'in-house' case designs.

    Graham
     
  14. Rich Webb

    Rich Webb Guest

    If you follow the links, it's easy to drill down to just the one-page
    pdf for a given type; downloading the entire volume isn't required.
    Nonetheless, the answer to "who sets the standards" is JEDEC.
     
  15. There are places that do exactly that.

    F'rinstance, my favorite recycled-goods vendor, Urban Ore in Berkeley,
    has tons of electronic equipment, all sold "as-is" with no guarantee of
    working or not. Much of it does work; a lot of stuff is "vintage" (like
    old tube-operated equipment), so you takes your chances with it. In any
    case, they move a lot of stuff through their store.

    Obviously they need to get rid of a lot of electronic crap that doesn't
    sell. Turns out that at least here (Alameda County), there are funded
    programs which handle consumer electronics waste. There's a place in
    Berkeley where I can take any electronic stuff--computer monitors, PCs,
    TVs, etc.--for disposal, for free, no questions asked.

    Too bad this isn't the case everywhere.


    --
    Made From Pears: Pretty good chance that the product is at least
    mostly pears.
    Made With Pears: Pretty good chance that pears will be detectable in
    the product.
    Contains Pears: One pear seed per multiple tons of product.

    (with apologies to Dorothy L. Sayers)
     
  16. Franc Zabkar

    Franc Zabkar Guest

  17. hr(bob)

    hr(bob) Guest

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