PSU protection with resettable polyfuse

Eric Smith spacewar at
Wed Mar 29 11:40:22 CDT 2017

On Wed, Mar 29, 2017 at 9:24 AM, Systems Glitch via cctalk <
cctalk at> wrote:

> > Any downsides to resettable polyfuses?
> If you hit them hard enough, they'll sometimes permanently open, which is
> desirable anyway but does require rework. I don't remember how they stack
> up speed-wise, I'm sure it's in the datasheets.

They're not very fast. They're comparable to a slow-blow fuse.

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