Pn2222 package?

Discussion in 'The Projects Forum' started by rougie, Oct 11, 2012.

  1. rougie

    Thread Starter Active Member

    Dec 11, 2006
    410
    2
    hello,

    quick question. I find myself with 3 transistors
    in my circuit. I need this circuit repeated 3 times.
    this gives me a total of 9 transistors.

    my question is the following:

    Does anyone know of an IC chip that embeds
    2 or 4 pn2222 transistors so I would limit the
    number of components on my board?

    I tried to google search but I didn't find much available
    parts.

    thanks for any feedback
    r
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
    2,517
    785
    Hi.

    Could the ULN 2003 or ULN 2004 work
     
  3. rougie

    Thread Starter Active Member

    Dec 11, 2006
    410
    2
    hello nerdegutta,

    I don't think this can work because i have my own specific resistor values connected to my transistors.

    thanks though!
     
  4. rougie

    Thread Starter Active Member

    Dec 11, 2006
    410
    2
    think i found it...

    MPQ2222

    r
     
  5. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,394
    1,606
    The CA3083 (still available in a few places) has 5 NPN's in a DIP style package. SOIC also available.
     
  6. rougie

    Thread Starter Active Member

    Dec 11, 2006
    410
    2
    yes, late last night I found it .... it was an intersil package
    ... I was very surprised ...

    a quinary package would suite me well as I would only need
    2 of them ...

    thanks for your help!
     
  7. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    Make sure you connect the substrate pin to a voltage that is at least as low as the lowest voltage on any pin in the package. For example, if ground is the lowest voltage in your circuit, and one or more emitters are connected to ground, connect the substrate to ground.
     
  8. takao21203

    Distinguished Member

    Apr 28, 2012
    3,577
    463
    You should use SMD transistors together with a SOIC adapter PCB.
    A bit pervert but it is possible to mount 8 of them on one 28-pin adapter.
     
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