Re: Identifying the legs of a transistor.

From: Chris (cfoley1064_at_yahoo.com)
Date: 03/04/05 

Date: 4 Mar 2005 06:29:48 -0800

Joe Norton wrote:
> > Hi, Joe. Thousands of transistors out there. How about describing
it,
> > and giving any numbers printed on it?
>
> I have two transistors. One is a 2N2219 A and the other is a 2N2905
A.
> Both have round metal cases with a tag at the edge. One pin seems to
be
> connected to the case. Does this help? Please excuse my ignorance!
:-)
>
> Joe.

Hello again, Joe. If I need a transistor pinout, I'll go to the NTE
Semiconductor cross-reference page first. They sell equivalents for
television/radio repair shops and other service techs.

http://nte01.nteinc.com/nte/NTExRefSemiProd.nsf/$$Search?OpenForm

Your 2N2219 crosses to an NTE123

http://www.nteinc.com/specs/100to199/pdf/nte123.pdf

and your 2N2905 crosses to an NTE128

http://www.nteinc.com/specs/100to199/pdf/nte128.pdf

The pinout on both is the same (view in fixed font or M$ Notepad):

         Base
          _
         /o\
 Emitter(o o) Collector/Case
         \_/

created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

The NTE website is really good for quickly finding transistor pinouts.
They're also handy if you need a repair or engineering part today.
They have retail outlets in many repair shops and depots, which means
that frequently you can just drive down the road and get your part
within an hour. Great stuff.

Good luck
Chris

Relevant Pages

  • Re: Identifying the legs of a transistor.
    ... Chris wrote: ... > Joe Norton wrote: ... If I need a transistor pinout, ... > television/radio repair shops and other service techs. ...
    (sci.electronics.basics)
  • Re: info wanted
    ... Is there another transistor with the same ... Joe LeKostaj;644551 Wrote: ... anyone seen a surface mount part only markings on it are d k 9 z.it's ... thicker pin like a small heatsink looks like this ...
    (rec.radio.amateur.homebrew)
  • Re: Identifying the legs of a transistor.
    ... Joe Norton wrote: ... Could someone remind me which leg is which on a ... > transistor, starting from the tag on the case. ...
    (sci.electronics.basics)