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wirewrap wires versus ordinary wires?

Discussion in 'Electronic Design' started by Sam Kaan, Dec 12, 2003.

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  1. Sam Kaan

    Sam Kaan Guest

    What is the real difference between wirewrap type wires versus an
    ordinary spool of wire? Suppose you are in a surplus store and pick
    up a spool of
    30AWG type wires. Is there a quick way to tell if the spool can
    readily be
    used in wire-wrap operations?
  2. Marc H.Popek

    Marc H.Popek Guest

    is it Teflon coated normally, John???

  3. John Fields

    John Fields Guest

  4. Boris Mohar

    Boris Mohar Guest

    No. Teflon is a bitch to strip and it cold flows. Kynar insulation is used.


    Boris Mohar

    Got Knock? - see:
    Viatrack Printed Circuit Designs
    Aurora, Ontario
  5. Kynar, not Teflon


  6. John Larkin

    John Larkin Guest

  7. IBM used teflon insulation for *years*. It's not hard at all to strip
    (it does take a decent stripper), but it does "cold-flow" around other
    pins if you're not careful.
  8. Bob Stephens

    Bob Stephens Guest

    Kynar, typically. There used to be something called Tefzel too.. maybe
    modified Teflon?

  9. John Fields

    John Fields Guest

  10. Marc H.Popek

    Marc H.Popek Guest


    "Whats all this Cold flow talk? Never heard the term. does it means keeps
    creeping after you stress it.

  11. Boris Mohar

    Boris Mohar Guest

  12. Yes, more specifically it moves around the sharp WW pins, perhaps
    causing the insulation to be cut and a short to form. Thought I
    found it to be more a problem with kynar insulation than teflon.
    IBM used nothing but Teflon for WW for a couple of decades,
    because it was better than kynar.
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