Need help ID'ing an unknown transistor

Discussion in 'Electronics Resources' started by RWhite1, Dec 13, 2013.

  1. RWhite1

    Thread Starter New Member

    Dec 13, 2013
    2
    0
    Can anyone help me ID an unknown transistor? It's in a T072 case (like a TO39 except with 4 leads) and it has these three lines on the top of the case:
    S (the 'S' looks like the old Signetics' logo)
    D211
    814
    I need to know what is and what the pin outs are?
    Thank you for any help.
    Ron
     
  2. #12

    Expert

    Nov 30, 2010
    16,337
    6,821
    Bad results for 2SD211. That one is a TO-3
     
  3. RichardO

    Well-Known Member

    May 4, 2013
    1,238
    384
    It may be an SD211 which are very high speed signal DMOS-FET's. They were made by Signetics decades ago. Calogic Corporation may still make them.
     
  4. RichardO

    Well-Known Member

    May 4, 2013
    1,238
    384
    If it is a Signetics SD211 then looking at the leads (bottom view) the connections clockwise from the tab should be, in order; Source, Drain, Gate and finally the body/case.

    I hope this helps.
     
    THE_RB likes this.
  5. RWhite1

    Thread Starter New Member

    Dec 13, 2013
    2
    0
    Thanks all.
    Ron
     
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