To-220

Discussion in 'General Electronics Chat' started by Potter,M., Aug 29, 2012.

  1. Potter,M.

    Thread Starter New Member

    Feb 20, 2012
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    How are the pins of a TO device numbered?
     
  2. Wendy

    Moderator

    Mar 24, 2008
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    Usually they aren't, though there are exceptions. Most are labeled according to function on the data sheet.

    A voltage regulator, for example, is labeled input, output, and ground.
     
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  3. crutschow

    Expert

    Mar 14, 2008
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    PackratKing and #12 like this.
  4. Audioguru

    AAC Fanatic!

    Dec 20, 2007
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    The datasheet shows a photo and labels which pin does what.
     
  5. #12

    Expert

    Nov 30, 2010
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    Almost every chip has a datasheet. The ability to google "(part number) datasheet" is essential.
     
  6. Audioguru

    AAC Fanatic!

    Dec 20, 2007
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    I get datasheets from www.datasheetarchive.com where I can select from a list of manufacturers. Usually I select the manufacturer who designed the original part because some copy-cat manufacturers make errors or do not provide details on their datasheet.
     
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  7. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    Best to use the data sheet from the manufacturer of the part you have though. Some parts by different makers use a different pin-out. Pins may not be the same connection internally from one company to another on discrete components.
     
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