/technologies/circuit-protection/b/blogen-USTelligent Community 12https://community.element14.com/technologies/circuit-protection/b/blog/posts/the-benefits-of-littelfuse-zeptosmdc-series-pptc-fusesWed, 23 Mar 2022 19:25:56 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:95418917-7b9f-4c3a-b050-76617be8fbderscasny0<p>updated article</p><img src="https://community.element14.com/aggbug?PostID=23151&AppID=33&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/circuit-protection/b/blog/posts/the-benefits-of-littelfuse-zeptosmdc-series-pptc-fusesSun, 27 Feb 2022 00:09:25 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:95418917-7b9f-4c3a-b050-76617be8fbdeshabaz0<p>I struggled to understand from this blog what was so special about this particular component.</p> <p>After reading up on it a bit:</p> <p>This type of polyswitch is specifically designed to trip at a high temperature, or with overcurrent, however it trips extremely fast at relatively low currents such as a trip time of 20 msec at 80 mA. Other normal polyswitch devices would require a higher trip current, and would take longer to trip.</p> <p>As a result, since the trip current is quite low, and the very fast (for a polyswitch) trip time capability, it means you could use it to replace a current limiting resistor and diode or TVS combination, even on digital I/O lines, which is somewhere you&#39;d never see a Polyswitch usually.</p> <p>The antenna use-case sounds interesting too, I didn&#39;t find information on that so far.</p><img src="https://community.element14.com/aggbug?PostID=23151&AppID=33&AppType=Weblog&ContentType=0" width="1" height="1">