Unknown Motorola Diode Part Number

Discussion in 'General Electronics Chat' started by Wendy, Nov 21, 2010.

  1. Wendy

    Thread Starter Moderator

    Mar 24, 2008
    20,765
    2,536
    M <Motorola Logo>
    023
    073
    305

    Case style similar to a 1N4454 except gray (no clear glass).

    I came across it while cleaning.

    I've seen similar threads, but I don't remember where. I'm not familiar with this number system for components.
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Bill,

    Can you take a picture of the component and post it here?

    hgmjr
     
  3. Wendy

    Thread Starter Moderator

    Mar 24, 2008
    20,765
    2,536
    I could, but while I have macro on my camera I don't have micro. It is very small, pretty typical of most small signal glass body diodes.

    [​IMG]

    This is more a matter of idle curiosity. That and I might learn how to look up a different part number system

    A micro lens is definitely on my Xmas list this year.
     
    Last edited: Nov 21, 2010
  4. Blackbull

    Well-Known Member

    Jul 26, 2008
    70
    6
    I have definitely seen a reference to Motorola deliberately using their own numbers to deter unauthorised servicing, I’m sure it was in a book, somebody with insider knowledge was giving the alternative numbers. Naturally I can’t find it now.
     
  5. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    Looks like a 400mW zener. I've seen tons of grey glass Motorola ones.

    Run a few mA through it reversed, and see what its zener voltage is. :)
     
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