Electronics > Projects, Designs, and Technical Stuff
Cheap, large, low-tech flex PCB
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Renate:
I'm looking to build a sensor using a flex PCB.
The size is around 75mm x 300mm (3" x 12") plus a tail.
I see plenty of options for polyimide, but it's thin and expensive.
I was looking for more the crappy stuff that they make PC keyboards out of.
That's tough, thick, translucent with tinned tracks and carbon globs. I don't need any carbon globs.
This is so low tech that if I had the single sided material I could tape out the design myself, although obviously I'd prefer somebody to knock me out a half dozen.
Does anybody have any leads on this, or even what it's called?
jmelson:
There are devices like the Cricut, that can cut out paper and plastic for scrapbooking (a fad, at least in the US). You can get
stuff that has copper foil stuck to vinyl plastic, cut it with the Cricut and peel the unwanted parts of the copper.
I never tried this, but was looking at this for a project for wearable LED systems.
Jon
artag:
I don't know the answer, though I may need something similar myself.
I intend to research FFS and FPS - those thin laminated circuits that are commonly used as ribbon cable. If I can't find a suitable one off the shelf it's possible the manufacturers will do custom pieces more cheaply than polyamide.
dmendesf:
Those are PET based:
https://www.kingleytech.com/show-66718.html
You cannot solder it because it melts.
Renate:
--- Quote from: dmendesf on January 14, 2020, 03:55:30 am ---Those are PET based:
--- End quote ---
Hmm, that looks like it would be really cheap if I wanted a million.
I think the whole silkscreen bit would be expensive for a few though.
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