How to fabricate flex circuits like this?

Discussion in 'General Electronics Chat' started by Della Tan, Jul 11, 2016.

  1. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    We tried 3 times and finally we make it, but still many things should be considered. How do you guys to fabricate this?
     
  2. Papabravo

    Expert

    Feb 24, 2006
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    #12 likes this.
  3. #12

    Expert

    Nov 30, 2010
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    Thanks. Just what I need for the Hall Effect sensor on my water softener.;)
     
  4. SLK001

    Well-Known Member

    Nov 29, 2011
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    What was so hard about fabricating that flex circuit?
     
  5. Sensacell

    Well-Known Member

    Jun 19, 2012
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    1) Materials are hard to find
    2) Thin stuff is really hard to drill
    3) Messing with nasty chemicals is no fun
    4) Your homemade flex circuit is going to be poor quality

    Like Papa said, it's a commodity skill, learning this has no career or strategic value.
    You could make homemade tires for your car- but you wouldn't.
     
    Dr.killjoy, Papabravo and #12 like this.
  6. Papabravo

    Expert

    Feb 24, 2006
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    Maybe they are trying to start an offshore flex circuit fabrication company. Too bad they're two decades behind the curve. Better luck next time fellas.
     
  7. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Wait for it...

    I'm sure we'll hear an spam-vertisement from the OP in a day or two.
     
  8. Techno Tronix

    Member

    Jan 10, 2015
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    That depends on the design requirements. Some of the manufacturers are using laser cutting, mechanical routing, steel rule dies and chemically milled dies methods for final fabrication.
     
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  9. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    Thank you, I will have a look.
     
  10. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    You mean your sensor needs this kind of circuit?
     
  11. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    Only the location of "Golden fingers", cause they are hollow.
     
  12. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    1)We use FFCL (polyimide+copper)
    2)laser drill we can use
    3)If we can fabricate well, I believe they are useful, after all, flex circuits are widely used in many electrical applications. How do you think?
     
  13. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    So two decades ago, you've started source flex circuits oversea?
     
  14. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    But the difficult point is the location of "Gold Fingers", they are hollow.
     
  15. Papabravo

    Expert

    Feb 24, 2006
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    We made flex circuits here two decades ago.
     
  16. Della Tan

    Thread Starter New Member

    Jun 22, 2016
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    That's quite good, so have you some suggestion for the hollow gold fingers? Thank you in advance.
     
  17. Papabravo

    Expert

    Feb 24, 2006
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    You misunderstand. I was a user of flex circuits, not a maker. I went to the people who are professionals and had them do the work for me. I was satisfied with the results. You should ask the people who do this for advice. It was not clear to me if you are a user or a maker of flex circuits.
     
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