what is the E202 transistor? It looks like the E101, white circular capsule.

Discussion in 'General Electronics Chat' started by ronsuzuki, May 1, 2017.

  1. ronsuzuki

    Thread Starter Member

    Feb 9, 2012
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    2 of them go in an EML 500 synthesizer from the early 70's, in the sample and hold section, after the LM748, tied together by a center pin and an edge pin. The transistor in the schematic doesn't have an npn or pnp sign or any designation for that matter, just an arrow pointing from what looks like the base to the center, I'm guessing it's a unijuntion... Any ideas? Its a circular white package, with a black dome, e202 written in black letters.
     
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    May we see this mystery part on the schematic?
     
  3. AlbertHall

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    Jun 4, 2014
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  4. ronsuzuki

    Thread Starter Member

    Feb 9, 2012
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    Last edited: May 2, 2017
  5. AlbertHall

    AAC Fanatic!

    Jun 4, 2014
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    There isn't much data for the E202 to go on but what there is matches so it would likely be a good swap.
     
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