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2N2222 Logo

Discussion in 'Electronic Components' started by Watson A.Name - Watt Sun, Dark Remover, Dec 17, 2003.

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  1. Check out the pic of a supposedly 2N2222 on
    alt.binaries.schematics.electronic newsgroup.
    My question is what manufacturer's logo is this.

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    ###Got a Question about ELECTRONICS? Check HERE First:###
    http://users.pandora.be/educypedia/electronics/databank.htm
    My email address is whitelisted. *All* email sent to it
    goes directly to the trash unless you add NOSPAM in the
    Subject: line with other stuff. alondra101 <at> hotmail.com
    Don't be ripped off by the big book dealers. Go to the URL
    that will give you a choice and save you money(up to half).
    http://www.everybookstore.com You'll be glad you did!
    Just when you thought you had all this figured out, the gov't
    changed it: http://physics.nist.gov/cuu/Units/binary.html
    @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
     
  2. Peter Lowrie

    Peter Lowrie Guest

    Hiya Watson,
    Who cares, really...Replacements are not an issue, are they?

    In any case (pardon the pun) could it be an old Radiola?
     
  3. Lorenzo

    Lorenzo Guest

    [cut].
    [cut]

    Rohm
    http://www.rohm.com/

    Ciao
     
  4. Well, no, and yes. No, because that particular part number is still
    available from that particular manufacturer in that particular
    configuration. And yes, because that particular part number is still
    available from that particular manufacturer in that particular
    configuration. Ya see, the true 2N2222 is a metal can, and all
    manufacturers made it that way. It's a registered JEDEC part, and is
    a very popular part, just about every project made decades ago used
    it. If the average hobbyist were to use this epoxy case version (the
    part numbers are the same!), I doubt that the epoxy case version could
    handle the power that the metal case 2N2222A can handle. Not to
    mention other issues like trying to heatsink the epoxy case version.

    It really should not be an epoxy case labeled with that registered
    JEDEC part number.

    I looked on a website that has many chip mfr's logos, and I didn't see
    it. Any ideas? Thanks.
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    @@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@,@@[email protected]@[email protected],@@[email protected]@[email protected]@[email protected]@
    ###Got a Question about ELECTRONICS? Check HERE First:###
    http://users.pandora.be/educypedia/electronics/databank.htm
    My email address is whitelisted. *All* email sent to it
    goes directly to the trash unless you add NOSPAM in the
    Subject: line with other stuff. alondra101 <at> hotmail.com
    Don't be ripped off by the big book dealers. Go to the URL
    that will give you a choice and save you money(up to half).
    http://www.everybookstore.com You'll be glad you did!
    Just when you thought you had all this figured out, the gov't
    changed it: http://physics.nist.gov/cuu/Units/binary.html
    @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
     
  5. Peter Lowrie

    Peter Lowrie Guest

    It's equivalents are:

    BSS40 & 41
    BSW61...64
    2n4014
    2n3737

    It's a 1/2 watt B>100 silicon NPN.
     
  6. I went to the above website and found their list of discretes and
    transistors. I couldn't find the 2N2222A that I posted the picture of
    on ABSE, so I then clicked on the 2N4403 and came up with this URL
    http://www.rohm.com/products/databook/tr/pdf/umt4403.pdf
    The reason I chose the 2N4403 was that I bought 100 of them for a
    whole five bucks using "buy it now" on Ebay (brand new, still on the
    tape). They also have this same logo, and they are all in the true
    TO-92 epoxy package. After looking at the picture in the data sheet
    at the above URL, I don't believe this is the logo of the maker of the
    2N4403s I bought, because the Rohm 2N4403 transistors come in a
    smaller, squareish epoxy package, unlike the TO-92 package. And I did
    not see any logo in the data sheet. So I doubt that Rohm is the maker
    of these transistors.

    But I thank you for the info, and wish all a happy holidays.
    (OT: We went and saw LOTR Return of the King last night. Awesome
    movie, go see it. But read the books if you want the full story.)

    --
    @@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@,@@[email protected]@[email protected],@@[email protected]@[email protected]@[email protected]@
    ###Got a Question about ELECTRONICS? Check HERE First:###
    http://users.pandora.be/educypedia/electronics/databank.htm
    My email address is whitelisted. *All* email sent to it
    goes directly to the trash unless you add NOSPAM in the
    Subject: line with other stuff. alondra101 <at> hotmail.com
    Don't be ripped off by the big book dealers. Go to the URL
    that will give you a choice and save you money(up to half).
    http://www.everybookstore.com You'll be glad you did!
    Just when you thought you had all this figured out, the gov't
    changed it: http://physics.nist.gov/cuu/Units/binary.html
    @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
     
  7. Thank you, and yes, that's what it is; it's a common, well-documented
    transistor. But please see my other followup for the reason why I'm
    trying to find out who makes it. Thanks again, and happy holidays.


    --
    @@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@,@@[email protected]@[email protected],@@[email protected]@[email protected]@[email protected]@
    ###Got a Question about ELECTRONICS? Check HERE First:###
    http://users.pandora.be/educypedia/electronics/databank.htm
    My email address is whitelisted. *All* email sent to it
    goes directly to the trash unless you add NOSPAM in the
    Subject: line with other stuff. alondra101 <at> hotmail.com
    Don't be ripped off by the big book dealers. Go to the URL
    that will give you a choice and save you money(up to half).
    http://www.everybookstore.com You'll be glad you did!
    Just when you thought you had all this figured out, the gov't
    changed it: http://physics.nist.gov/cuu/Units/binary.html
    @@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@[email protected]@[email protected]@@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@@
     
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